Musnad Ahmad 1153:1597

Yahya narrated to us, from Shu'bah, who said: Abu 'Imran al-Jawni narrated to me, from Talhah, who said: 'Aishah said to the Messenger of Allah, peace and blessings of Allah be upon him: "I have two neighbors, to which of them should I give a gift?" He said: "To the one whose door is closest to you."