Musnad Ahmad 1153:756

Surayj narrated to us, he said: Nafi’ narrated to us, from Ibn Abi Mulaykah, that ‘Aishah gave something in charity, and she ordered Barirah to come to her and look at it. The Prophet, peace and blessings of Allah be upon him, said to her: "Do not count, lest it be counted against you."