(644) بَابُ لا يَكُنْ بُغْضُكَ تَلَفًا
Aslam said, " 'Umar ibn al-Khattab said, 'Do not let your lovebe a total infatuation. Do not let your anger be destruction.' I asked,'How is that?' He replied, 'When you love, you are infatuated like a child.When you hate, you desire destruction for your companion.'"
Reference: Al-Adab Al-Mufrad 1322
In-book reference: Book 57, Hadith 7
English translation: Book 57, Hadith 1322