(55) باب فِيمَنْ يَهْجُرُ أَخَاهُ الْمُسْلِمَ
Anas b. Malik reported the Messenger of Allah (May peace be upon him) as saying:
Do not hate each other; do not envy each other; do not desert each other; and be the servants of Allah as brethren. It is not allowed for a Muslim to keep apart from his brother for more than three days.
Reference: Sunan Abi Dawud 4910
In-book reference: Book 43, Hadith 138
English translation: Book 42, Hadith 4892