(7) باب النَّهْىِ عَنِ التَّحَاسُدِ، وَالتَّبَاغُضِ، وَالتَّدَابُرِ،
Anas b. Malik reported Allah's Messenger (ﷺ) as saying:
Neither nurse mutual hatred, nor jealousy, nor enmity, and become as fellow brothers and servants of Allah. It is not lawful for a Muslim that he should keep his relations estranged with his brother beyond three days.
Reference: Sahih Muslim 2558 b
In-book reference: Book 45, Hadith 26
USC-MSA web (English) reference(deprecated numbering scheme): Book 32, Hadith 6205