General Behavior (Kitab Al-Adab)
Dawud :: Book 41 : Hadith 5119
Narrated Abdullah ibn Umar:
A woman was my wife and I loved her, but Umar hated her. He said to me: Divorce her, but I refused. Umar then went to the Prophet (peace_be_upon_him) and mentioned that to him. The Prophet (peace_be_upon_him) said: Divorce her.