The covenant between us and them

The prayer is the covenant that marks out the believers.

Narrated by Buraidah ibn al-Husaib

The covenant between us and them is the prayer; whoever abandons it has disbelieved.

Jami' at-Tirmidhi 2621, Sunan an-Nasa'i 463, Sunan Ibn Majah 1079

What this hadith teaches

The "covenant" is the visible mark that separates the Muslim community from others. This is one of the strongest warnings in the Sunnah about leaving the prayer.

Reference and grade

Grade
Sahih (at-Tirmidhi: hasan sahih gharib; al-Albani: sahih)
Narrator
Buraidah ibn al-Husaib

The hadith in Arabic نص الحديث

الْعَهْدُ الَّذِي بَيْنَنَا وَبَيْنَهُمُ الصَّلاَةُ فَمَنْ تَرَكَهَا فَقَدْ كَفَرَ

Arabic text of Jami' at-Tirmidhi 2621, as given on sunnah.com.