Nafi' narrates from Aslam, the freed slave of Sayyiduna Umar (may Allah be pleased with him), that Sayyiduna Umar (may Allah be pleased with him) fixed a jizyah of four dinars on those who deal in gold and a jizyah of forty dirhams on those who deal in silver, and along with that he also fixed provisions for the Muslims and three days of hospitality.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجزية / 18686