Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) said: "When Sayyiduna Musa (peace be upon him) was sent, he used to graze the goats of his family, and when I was sent, I used to graze the goats of my family at a place called Jiyad."
Ahmad recorded it as part of a long hadith which has already passed before this in the chapter on buying and selling, in the chapter that mentions the animals that ought to be kept.