Abu Hurairah (May Allah be pleased with him) said:
The Messenger of Allah ﷺ 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 ﷺ : "لا يحل لمسلم أن يهجر أخاه فوق ثلاث، فمن هجر فوق ثلاث، فمات دخل النار".((رواه أبو داود بإسناد على شرط البخاري)).