It is narrated from Ahnaf bin Qais (may Allah have mercy on him) that once my cousin presented himself in the court of the Messenger of Allah and said, "O Messenger of Allah! Give me some brief advice, perhaps I will understand it." The Noble Prophet (peace and blessings be upon him) said, "Do not get angry." He repeated his request several times, and the Noble Prophet (peace and blessings be upon him) gave the same reply each time: "Do not get angry."
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23137
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن