Anas bin Malik (May Allah be pleased with him) said:
The Prophet (ﷺ) said, "Do not harbour grudge against one another, nor jealousy, nor enmity; and do not show your backs to one another; and become as fellow brothers and slaves of Allah. It is not lawful for a Muslim to avoid speaking with his brother beyond three days."[Al- Bukhari and Muslim].
App reference: Book 18, Hadith 57
Arabic/English book reference: Book 18, Hadith 1567