Yazeed bin Abi Maryam narrated that Abul-Hawra" as-Sa"di said: I said to al-Hasan bin ‘Ali:

What do you remember from the Messenger of Allah (ﷺ)? He said: I remember that I took a date from the zakah dates and put it in my mouth. The Messenger of Allah (ﷺ) took it out, with the saliva on it, and put it back with the dates. A man said to him: What is wrong if he eats this date? He said: "We do not consume charity.” And he used to say: "Leave that which makes you doubt for that which does not make you doubt, for honesty leads to tranquility but dishonesty leads to doubt.” And he used to teach us this supplication: “O Allah, guide me along with those whom You have guided, pardon me along with those whom You have pardoned, protect me along with those whom You have protected, and bless for me that which You have bestowed. Protect me from the evil You have decreed, for he whom You protect is never abased." And perhaps he said: “Blessed and Exalted are You, our Lord."