Rabi'ah bin Shayban said: I asked Sayyiduna al-Hasan bin Ali (may Allah be pleased with him): "What do you remember from the Messenger of Allah (peace and blessings be upon him)?" He said: "I went up with him to the upper room of charity, and I took a date and began chewing it. the Prophet (peace and blessings be upon him) said: 'Throw it away; charity is not lawful for us.'"
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2728