From Sahih Muslim (Hadith 2487):
A'isha (Allah be pleased with her) said:Three are the decions (of the Shari'ah that we have come to know) through Barira. The people gave her sadaqa and she offered us as gift. We made a mention of it to the Messenger of Allah (ﷺ), whereupon he said: It is a sadaqa for her and a gift for you; so eat it
Reference: Muslim 2487