Musnad Ahmad 1250:5

Isma'il ibn Ibrahim narrated to us, from Khalid, from Hafsa, from Umm 'Atiyya, who said: The Messenger of Allah (peace and blessings of Allah be upon him) sent me a sheep from the charity (sadaqah). I sent a portion of it to 'Aisha. When the Messenger of Allah (peace and blessings of Allah be upon him) came to 'Aisha, he said: "Do you have anything?" She said: "No, except that Nusayba [Umm 'Atiyya] sent us some of the sheep that you sent to her." He said: "It has reached its destination."