Abu Hurairah (May Allah be pleased with him) reported:
Al-Hasan bin 'Ali (May Allah be pleased with them) took one of the dates of the Sadaqah (charity) and put it in his mouth, whereupon Messenger of Allah (ﷺ) said, "Leave it, leave it, throw it away. Do you not know that we do not eat the Sadaqah (charity)?"[Al-Bukhari and Muslim].
Arabic/English book reference: Book 1, Hadith 298