Al-Hasan bin ʿAli took a date from the dates given in charity and put it in his mouth. The Prophet ﷺ said, "Expel it from your mouth. Don't you know that we do not eat a thing which is given in charity?"  

النَّبِيُّ ﷺ كِخٍ كِخٍ لِيَطْرَحَهَا ثُمَّ قَالَ أَمَا شَعَرْتَ أَنَّا لاَ نَأْكُلُ الصَّدَقَةَ