ANSWER:

This kind of vow (Nadhr) is not recommended. If you already made it, you must fulfill it.

Is it permissible to make Dua and say that If Allah fulfiled my Dua I will pray 100 nawafil or keep fast for 10 days or give money to needy?

Oaths | April 25, 2019 7:37 am
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Is it a major sin to make a promise to Allah in exchnage for something? i.e. saying ‘Oh Allah help me pass my exams and i always aim to wake up or tahajjud”?