عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَنَّهُ قَالَ: ((عَلِّمُوا وَبَشِّرُوا وَلَا تُعَسِّرُوا، وَإِذَا غَضِبَ أَحَدُكُمْ فَلْيَسْكُتْ))
It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Teach and give glad tidings and do not create difficulties, and when someone becomes angry, he should remain silent."