1. al-Bukhari, M. I. I. (1971). The translation of the meanings of al-Bukhari by M.M.Khan (pp. 810–870). Medina: Al-Munawwara Islamic University.
2. al-Hajjaj, Imam Muslim ibn. (2020). Sahih Muslim, 013, Hadith Number 4005. http://www.hadithcollection.com/sahihmuslim/Sahih%20Muslim%20Book%2013.%20Bequests/sahih-muslim-book-013-hadith-number-4005.html. Accessed in October.
3. Ali, A. Y. (1999). The holy Qur’an: Text, translation and commentary. Beirut: Dar Al Arabia.
4. Atia, M. (2008). Arab Republic of Egypt. In B. Ibrahim & D. H. Sherif (Eds.), From charity to social change: Trends in Arab philanthropy (pp. 34–57). Cairo: American University in Cairo Press.
5. Bewley, A. A. (1997). Al-Muwatta of imam Malik ibn Anas: The first formulation of Islamic law (English translation). IBT, Kuala Lumpur: Madinah Press, Granada.