Fiqh Principles and the Legitimacy of Indonesia's Isbat Session System
DOI:
https://doi.org/10.47766/astroislamica.v4i2.6890Keywords:
Isbat Session, Sharia legitimacy, Tasharruf al-imam, Maslahah, Hisab and RukyatAbstract
This study aims to examine the sharia legitimacy of the Isbat Session in determining the beginning of the lunar month in Indonesia through the perspective of the fiqh principle of Tasharruf al-Imam ‘ala al-Ra’iyyah Manutun bi al-Maslahah. The focus of the study is to analyze the normative basis of this principle as a basis for state authority and to test the effectiveness of its implementation in reconciling differences in hisab-rukyat and realizing the welfare of the people. The study uses empirical qualitative methods with content analysis and critical discourse analysis approaches. Primary data includes official documents from the Ministry of Religious Affairs regarding the results of the Isbat Session for the 2015–2025 period and public responses, while secondary data are sourced from fiqh literature, journals, and related books. The research findings indicate that the Isbat Session has strong sharia legitimacy based on the principle of tasharruf al-imam, where the state acts as ulil amri who ensures the realization of public welfare through collective decisions. Empirically, 82% of the Isbat Session decisions were successfully agreed upon by the government, NU, and Muhammadiyah, proving the forum's effectiveness as a unifying instrument. However, 18% of the differences that occurred—particularly with Muhammadiyah—were caused by fundamental methodological differences between rukyat bil fi'li (NU) and hisab wujudul hilal (Muhammadiyah). This study concludes that the Isbat Session is a form of Islamic jurisprudence that is valid according to sharia and effective in creating legal certainty and social stability, although further efforts are still needed to embrace the remaining methodological differences.
References
Ali Ahmad Al-Nadwi, Al-Qawa’id Al-Fiqhiyah, (Beirut: Dar Al-Qalam, Fifth Edition, 2004).
Al-Ghazali, Abu Hamid. "Al-Mustashfa Min 'Ilm Al-Usul," (Beirut: Dar Al-Kutub Al-Ilmiyah, 2022).
Al-Suyuthi, Jalaluddin. Al-Ashbah Wa Al-Naza'ir.
Al-Suyuthi. Al-Ashbah Wa Al-Naza'ir; Rahman. The Rules Of Fiqh.
Al-Qur’an, Ministry Of Religious Affairs Of The Republic Of Indonesia, 2016.
Black, Kathy Bishop Kyrillos, Jonathan L. Friedmann, Tamar Frankiel, Hamid Mavani, And Jihad Turk. “The Islamic Calendar Book.” In Rhythms Of Religious Ritual, 167–86. Claremont Press, 2021. Https://Www.Jstor.Org/Stable/J.Ctvwrm4gj.8.
Essaura, Khairazka, Refki Saputra, Abdul Rochim, School Of Islamic Studies And Sharia Sciences. "Review Of Tasharruf Al-Imam 'Ala Ar-Ra'iyyah Manuthun Bi Al-Maslahah Rules In Determining Hajj Costs (Analytical Study Of Presidential Decree Number 7 Of 2023)." Journal Of Legal And Policy Innovation 5, No. 4 (2024): 304–22. Https://Ejurnals.Com/Ojs/Index.Php/Jihk
Fausi, Achmad, And Jaih Mubarok. "Leadership Jurisprudence And Interfaith Marriage: Contextualizing The Rules Of Ta S ̣ Arruf Al-Im A ̄ M ' Ala ̄ Al- Ra ' Iyyah Manu ̄ Ṭ Un Bi Al-Ma S ̣ La H ̣ Ah" 3 (2023).
Fadholi, Ahmad. “335442-Sidang-Isbat-Urgensi-Dan-Dinamikanya-Ef860368” 4, No. 2 (2019): 147–69.
Fitriyani, Isfihani, Astrie Octasari. “Implications Of The New Rukyat Mabims Imkanur Criteria For The Unification Of The Early Month Of Luminary In Indonesia” 7, No. 2 (2024): 462–82. https://doi.org/10.58824/mediasas.V7i2.197
Garcia, Ana Rita, Sara Brito Filipe, Cristina Fernandes, Cristina Estevão, And George Ramos. “MASLAHAH ACCORDING TO THE CONCEPT OF IMAM AL-GHAZALI.” DIKTUM: Journal Of Sharia And Law 18, No. 1 July 2020 (2020): 118–28. Https://Ejurnal.Iainpare.Ac.Id/Index.Php/Diktum/Article/View/663/750
Ibrahim Aris, Abd Al-Halim Muntashir, Et Al., Al-Mu'jam Al-Wasith, (Cairo: Majma' Al-Lughah Al-Arabiyyah, 1972).
Idrus, Achmad Musyahid. "State Leaders' Policies From The Perspective Of Fiqh Principles: Tasarruf Al-Imam Manutun Bil Maslahah." Al Daulah: Journal Of Criminal And State Law 1, No. 1 (2021): 123. https://doi.org/10.24252/ad.V1i1.26278
Ilyas, Muhammad. “Visibility Of The New Moon: Astronomical Predictibility” 51, No. 2 (1978): 58–68.
Indayati, Wiwik. “Addressing The Diversity Of Rukyat Hisab Of Community Organizations In Indonesia.” AL-AFAQ: Journal Of Astronomy And Falak Science 3, No. 2 (2022): 131–42. https://doi.org/10.20414/afaq.V3i2.4771
Indonesia, Republic Of Indonesia Law. “Law Of The Republic Of Indonesia Number 3 Of 2006 Concerning Amendments To Law Number 7 Of 1989 Concerning Religious Courts.” Indonesia: Republic Of Indonesia, 2006.
Indonesian Ulema Council. “Fatwa Of The Indonesian Ulema Council Number 2 Of 2004 Concerning The Determination Of The Beginning Of Ramadhan, Shawwal, And Dzulhijjah,” 2004, 216–20.
Tolkah, Muhammad Nurkhanif, and Mohd Hafiz Safiai. “Digital Hilal Observation: Evaluating the Authenticity of Hilal Testimonials in Indonesia Using the Digistar-6 Planetarium System.” International Journal of Religion 5, no. 6 (May 2, 2024): 947–70. https://doi.org/10.61707/yvxx1v72
Irfan, Irfan. “Comparative Study Of Fazilet Calendar And Mabims Criteria On Determining Hijri Calendar.” Al-Hilal: Journal Of Islamic Astronomy 5, No. 1 (2023): 99–116. https://doi.org/10.21580/al-hilal.2023.5.1.13760
Jamarudin, Ade. “Isbat Ramadhan In The Perspective Of The Qur’an.” Madania: Journal Of Islamic Sciences 8, No. 1 (2006): 83–108. Http://Ejournal.Uin-Suska.Ac.Id/Index.Php/Madania/Article/View/5425
Marpaung, Watni. “HISÂB IMKÂN RU ’ YAT: A Unification Effort In Determining The Beginning Of The Months Of Qamariah.” Miqot XXXIX, No. 2 (2015): 303–18.
Maskufa, Maskufa. “Hisab Wujud Al-Hilal As Muhammadiyah Identity Politics In The Hisab Ruyat Discourse In Indonesia.” Jurnal Indo-Islamika 6, No. 2 (2020): 183–202. https://doi.org/10.15408/idi.V6i2.14802
Mu’ammar & Muslich Shabir “Government Authority Of Worship: A Solution To The Problem Of Determining The Beginning Of Ramadan And Shawwal.” Jurnal Ibtida, 3(1), (2022).
Muslifah, Siti. “Efforts To Address Differences In Determining The Beginning Of The Qamariah Months In Indonesia.” Azimuth: Journal Of Islamic Astronomy 1, No. 1 (2020): 74–100. Http://Jurnalfsh.Uinsby.Ac.Id/Index.Php/Azimuth/Article/View/788.
Ni'am, Alamsyah, Afifah Mulya, And Muhammad Ihtirozun. "Dynamics Of Determining The Beginning Of The Lunar Months By Nahdatul Ulama: Before And After The Formulation Of Imkan Rukyat Criteria." Astroislamica: Journal Of Islamic Astronomy 4, No. 1 (2025): 62–78. https://doi.org/10.47766/astroislamica.V4i1.5241
Nufus, Khaerun. “Isbat Session To Determine The Beginning Of The Lunar Month: An Islamic Law Perspective.” Inklusif 3, No. 1 (2018): 1–20.
Qulub, Siti Tatmainul, And Ahmad Munif. “The Urgency Of Fatwas And Isbat Sessions In Determining The Beginning Of The Lunar Month In Indonesia.” Jurnal Bimas Islam 16, No. 2 (2023): 423–52. https://doi.org/10.37302/jbi.V16i2.929
Rahman, Fathor, Pujiono Pujiono, And Siti Muslifah. "Determining The Beginning Of The Lunar Month For Worship." Phenomena 12, No. 2 (2020): 107–38. https://doi.org/10.21093/fj.V12i2.2264
Rohmah, Nihayatur. “Ijtimak As A Prerequisite For The New Moon In The Hijri Calendar.” Al-Mikraj: Indonesian Journal Of Islamic Studies And Humanities 1, No. 1 (2020): 80.
Qulub. Siti Tatmainul “A Critical Analysis Of The Itsbat Session Decisions For Determining The Beginning Of The Lunar Months In Indonesia From The Perspective Of Usul Fiqh.” Al-Ahkam Volume 25, No. April (2015): 109–32.
Suhar, A. M., Tasnim Rahman Fitra, Abdurrohman Kasdi, Khusnul Istiqomah, Abdurrahman, And Humaira Ahmad. “COLLECTIVE IJTIHAD PRACTICE IN INDONESIA: The Role Of Isbat Sessions In Addressing Legal Paradigm Differences Between Hisab And Rukyat.” Al-Risalah: Forum For Legal And Social Studies 24, No. 2 (2024): 105–23. https://doi.org/10.30631/alrisalah.V24i2.1537
Yunus, Muhammad, Madrasah Islamic School, Arabiyah Bayang, UIN Imam, And Bonjol Padang. "Analysis Of Determining The Beginning Of The Hijri Month Using The Hisab And Rukyat Approach Method." Al-Mizan Journal: Journal Of Islamic Law And Sharia Economics 6468 (2025): 27.
Zaidan, Abd Al-Karim. "Al-Wajiz Fi Syarh Al-Qawa'id Al-Fiqhiyyah," (Beirut: Muasasah Ar-Risalah, First Edition, 2001).
Zufriani. "HISAB AND RUKYAT AND THEIR INFLUENCE ON THE UNITY OF THE MUSLIMS: ANALYSIS OF IMPACT AND SOLUTIONS." Al-Qishthu 14 (2016): 141–69. Https://Media.Neliti.Com/Media/Publications/559876-Hisab-Dan-Rukyat-Serta-Pengaruhnya-Terha-62894d34.Pdf.
Wahab, Raihana Abdul, Mohammaddin Abdul Niri, Muhammad Syazwan Faid, Mohd Saiful Anwar Mohd Nawawi, and Nurul Kausar Nizam. “An Analysis of Takwim Hijriah Khairiah in the Context of Historical Development of the Malaysian Hijri Calendar.” Journal of Al-Tamaddun 20, no. 2 (December 24, 2025): 335–43. https://doi.org/10.22452/JAT.VOL20NO2.23
BBC News Indonesia. Different Start Of Fasting: Why Do Muhammadiyah And The Government Often Determine The Start Of Ramadan?, Https://Www.Bbc.Com/Indonesia/Articles/C51wdn1q099o
The Isbat Session Results Are Taken From The Official Website Of The Indonesian Ministry Of Religious Affairs Https://Kemenag.Go.Id/, Supported By Crescent Sighting Height Data From The BMKG Https://Hilal.Bmkg.Go.Id/, As Well As The Official Websites Of Nahdlatul Ulama Https://Www.Nu.Or.Id/Tag/Isbat And Muhammadiyah Https://Muhammadiyah.Or.Id/
Islami.Co. Loud Voices During The Isbat Session: What Happened?, Https://Islami.Co/Suara-Lantang-Di-Tengah-Sidang-Isbat-Apa-Yang-Terjadi/
Ministry Of Religious Affairs Of The Republic Of Indonesia, Why Is An Isbat Session Necessary For The Beginning Of Ramadan, Shawwal, And Zulhijjah?, Https://Kemenag.Go.Id/Nasional/Kenapa-Perlu-Sidang-Isbat-Awal-Ramadan-Syawal-Dan-Zulhijjah-Ini-Penjelasan-Kemenag-7x8Mb
Ministry Of Religious Affairs Of The Republic Of Indonesia, Itsbat Costs 1.425 Billion, Not 9 Billion, Https://Kemenag.Go.Id/Nasional/Biaya-Itsbat-1425-Juta-Bukan-9-Miliar-Gilqkw,
Ministry Of Religious Affairs, The Crescent Moon Is The Same, Why Is The Start Of Ramadan Different?, Https://Kemenag.Go.Id/Opini/Hilalnya-Sama-Kenapa-Awal-Ramadan-Bisa-Berbeda-Abpgqo, Accessed On October 4, 2025.
Muhammadiyah, The Phenomenon Of Different Fatwas Regarding The Beginning Of The Hijri Month In Indonesia, Https://Muhammadiyah.Or.Id/2022/02/Fenomena-Perbedaan-Fatwa-Tentang-Awal-Bulan-Hijriyah-Di-Tanah-Air/
NU Online, A Closer Look At The Crescent Moon Criteria Of NU And Muhammadiyah, Https://Islam.Nu.Or.Id/Syariah/Melihat-Lebih-Dalam-Kriteria-Hilal-Nu-Dan-Muhammadiyah-Lllvz,
History Of The Isbat (Isbat) Session In Indonesia, Https://Www.Merdeka.Com/ Peristiwa/Sejarah-Sidang-Isbat-Di-Indonesia.Html
Isbat Session, Wikipedia, Https://Id.Wikipedia.Org/Wiki/Sidang_Isbat
The Isbat Session Remains A Method Of Maslahah (Maslahah) In Determining The Beginning Of The Hijri Month, Https://Www.Risalahnu.Com/8790/2024/11/29/Sidang-Isbat-Masih-Jadi-Metode-Maslahah-Dalam-Penentuan-Awal-Bulan-Hijriah/
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