Hadith- Cutting one other off

In the Name of Allah, the Most Gracious, the Most Merciful.

Anas reported that the Prophet, may Allah bless him and grant him peace, said, "Do not hate one another nor envy one another nor act in a hostile way towards one another nor cut one another off. Be slaves of Allah, brothers. It is not lawful for a Muslim to cut himself off from his brother for more than three days." [Agreed upon]

Riyad as-Salihin (The Meadows of the Righteous) of Iman Mohieddine Annawawi 631-676.  Chapter 269, Hadith 1567.