Hadith 17:75
Khalid ibn Makhlad narrated to us, from Muhammad ibn Hilal, from his father, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "It is not lawful for a Muslim to forsake his brother for more than three [days]."
حدثنا خالد بن مخلد عن محمد بن هلال عن أبيه عن أبي هريرة قال قال رسول الله صلى الله عليه وسلم لا يحل لمسلم أن يهجر أخاه فوق ثلاث