It is narrated from Saeed bin Musayyib (may Allah have mercy on him), who narrates from Umar bin Khattab (may Allah be pleased with him), that he gave a ruling of four thousand (dirhams) for a Jew and a Christian, and eight hundred (dirhams) for a Magian.
Hadith Referenceمسند الإمام الشافعي / كتاب القتل والقصاص والديات والقسامة / 1657
Hadith Takhrijاخرجه البيهقي: 8 / 100 - وفى المعرفة السنن والآثار له (4929) - وعبد الرزاق (18485)، (18489)۔ و ابن ابي شيبة (27445)۔