Riyad as-Salihin, Book 18, Hadith 1595 (In-Book) ⓘ
Abu Hurairah (May Allah be pleased with him) said: The Messenger of Allah said, "It is not lawful for a Muslim to forsake his (Muslim) brother beyond three days; and whosoever does so for more than three days, and then dies, will certainly enter the Hell."[Abu Dawud].
وعن أبي هريرة رضي الله عنه قال: قال رسول الله صلى الله عليه وسلم : "لا يحل لمسلم أن يهجر أخاه فوق ثلاث، فمن هجر فوق ثلاث، فمات دخل النار" .((رواه أبو داود بإسناد على شرط البخاري)).