The Qur'an treats a promise as a weight you will answer for. Fulfill every commitment, honor the covenant of Allah, and do not break oaths once made — because your word, once given, is something you will be questioned about.
“...And fulfill [every] commitment. Indeed, the commitment is ever [that about which one will be] questioned.”— 17:34 (Saheeh International)
“And fulfill the covenant of Allah when you have taken it, [O believers], and do not break oaths after their confirmation while you have made Allah, over you, a witness. Indeed, Allah knows what you do.”— 16:91 (Saheeh International)
Ask Noor can explain what to do if you break an oath (kaffarah) and the weight of a promise in Islam.
Ask Noor — free on the App Store