- The prayer times calculation method is taken from [1].
- The Hijri-Gregorian conversion is taken from [2].
- Some equations are taken from [3].
- For Qiblah direction you can refer to [4] and [5].
- The Mirath (Inheritance) calculation routines are implemented according to [6] and [7].
- The Zakat calculation routines are implemented according to [8] and [9].
- [1] Odeh, Mohammad, Prayer times calculation, 2001 (article, archive.org).
- [2] Odeh, Mohammad, Conversion between Gregorian and Hijri calendars, 2001 (article, archive.org).
- [3] Meeus, Jean, Astronomical Algorithms, ISBN:0-943396-35-2 (pdf version, archive.org).
- [4] Bilani, Hassan, A Geodetic Study For Determining of Qibla Direction, 2001 (article, archive.org).
- [5] Abed, Abdelkader, An opinion for determining qiblah direction in places far from Makkah (article, archive.org).
- [6] Islamic inheritance calculator, According to Authentic Qur'an & Sunnah (article, archive.org).
- [7] Sheikh Salah Najib Alddaq, Ahkam al mawarith, 2017 (article, archive.org).
- [8] Haytham Aamayra, Ma howa annisab fi zakat, 2016 (article, archive.org).
- [9] Zakat on agricultural products, 2018 (article, archive.org).