Who lived earlier, Ibn Khaldun or Muhammad Baqir Yazdi?
Muhammad Baqir Yazdi Muhammad Baqir Yazdi was an Iranian mathematician who lived in the 16th century. He gave the pair of amicable numbers 9,363,584 and 9,437,056 many years before Euler's contribution to amicable numbers. He was the last notable Islamic mathematician. His major book is "Oyoun Alhesab" (Arabic:عيون الحساب).
Khuwaylid ibn Asad Khuwaylid ibn Asad (Arabic: خويلد بن أسد‎ ‎ ) was a man of Banu Quraysh and mainly recognised as being the father of Khadijah bint Khuwaylid, the wife of the Islamic prophet Muhammad.