Hadith 17:77
Ibn Idris narrated to us, from Layth, from Tawus, from Ibn Abbas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Make things easy and do not make them difficult." He said it three times. "And if you become angry, then be silent."
حدثنا بن ادريس عن ليث عن طاوس عن بن عباس قال قال رسول الله صلى الله عليه وسلم يسروا ولا تعسروا قالها ثلاثا فإذا غضبت فاسكت