The Messenger of Allah (ﷺ) said: It is not right for a Muslim to keep apart from another Muslim for more than three days. Then when he meets him and gives three salutations, receiving during that time no response, the other bears his sin.
Reference: Sunan Abi Dawud 4913 In-book : Book 43, Hadith 141 English translation : Book 42, Hadith 4895
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