Musnad Ahmad 32:838

Muhammad ibn Abdullah—meaning al-Ansari—narrated to us, Humayd narrated to us, from Anas, who said: When this verse was revealed: "You will never attain righteousness until you spend from that which you love" [Al Imran: 92], or he said: "Who is it that would loan Allah a goodly loan?" [Al-Baqarah: 245], Abu Talhah ibn Sahl al-Ansari came and said: "O Messenger of Allah, my garden is in such-and-such a place, and if I were able to keep it secret, I would not have made it public." The Messenger of Allah (ﷺ) said: "Place it among the poor of your relatives," or he said: "Among the poor of your family."