Al-Anfaal (The Spoils of War)

56. “Those with whom you made a covenant, then they break their covenant every time, and they are not pious.”

The agreement of the Jews with the Prophet (S) was that they should not help pagans and not try to hurt the Muslims. But those groups of the Jews broke their promise and for the Battle of Khandaq they helped pagans by selling them arms.

Therefore, breach of promise is not consistent with humanity.

But breach of promise is the style of infidels. Faithfulness and chivalry are necessary to piety. The verse says:

“Those with whom you made a covenant, then they break their covenant every time, and they are not pious.”

Some Islamic traditions indicate that he who breaks promise is a hypocrite, although he establishes prayers and observes the fast.¹