Hadith 4874
Qatadah narrates: I asked Sa'id bin al-Musayyib, "What was the number of people at the time of the Treaty of Hudaybiyyah?" He replied: One thousand five hundred. The narrator says: Sayyiduna Jabir (may Allah be pleased with him) says their number was one thousand four hundred. So Sa'id said: He must have been mistaken. He himself has told me that their number was one thousand five hundred.