Musnad Ahmad 1153:1518

Waki' narrated to us, from Shu'bah, from Abu 'Imran al-Jawni, from a man from Quraysh who is called Talhah, from 'Aishah, who said: "I said: 'O Messenger of Allah, I have two neighbors; to which of them should I give a gift?' He said: 'To the one of them whose door is closest to you.'"