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

 

All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.

 

Thank you for your good question.

 

A Muslim has to be faithful and to fulfill and keep his or her promises and commitments.

 

The Qur’an and the Sunnah ask Muslims to keep their promises and warn them against breaking promises. For example, Prophet Muhammad (peace be on him) said, “The signs of the hypocrite are three, even if he/she fasts, prays, and claims to be a Muslim.” Then he mentioned (the signs of the hypocrite as): “Whenever he/she promises, he/she breaks his/her promise. Whenever he/she makes a covenant, he/she proves treacherous. Whenever he/she speaks, he/she tells a lie.” (Reported by Muslim)

 

So, you have to keep and fulfill your promises whether they are documented, verbal, contracts, etc.

 

May Allah accept your and our good deeds, ameen.

 

Allah Almighty knows best.