It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Teach people knowledge, make things easy, do not create difficulties," and he said three times, "When any one of you becomes angry, he should remain silent."
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 2556
Hadith Gradingحکم دارالسلام:حسن لغيره، وهذا إسناد ضعيف، الاختلاط ليث بن أبى سليم، وقوله: علموا ، ويسروا، ولا تعسرواه صحيح لغيره