It is narrated from Sayyidah Umm Hani (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said to her: "Keep some sheep and goats." I said: "No (I will not keep them)." He (peace and blessings be upon him) said: "Keep them, for there is blessing in them."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21409