Amr bin Shu'ayb narrates from his father, from his grandfather (may Allah be pleased with him), that in the time of the Messenger of Allah (peace and blessings be upon him) the value of the diyah was 800 dinars or 8000 dirhams, and the diyah of the People of the Book at that time was half of that of a Muslim. It remained so until Sayyiduna Umar (may Allah be pleased with him) became caliph. One day he stood up to deliver a sermon and said that camels were becoming scarce, so Sayyiduna Umar (may Allah be pleased with him) fixed it at 1000 dinars and 12000 dirhams; upon the owners of cattle 200 cows, upon the owners of goats 2000 goats, and upon the owners of garments 200 hullahs (sets of garments); and he left the diyah of the Ahl al-Dhimmah (as it was before).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16171