The Ruling on Fulfilling a Vow and a Promise

Question:
This is a questioner for the program who says in his question: At times I say, for example, "If I succeed, I will perform tawaf around the Ka'bah in the Sacred Mosque, and other acts of worship for Allah (Glorified and Exalted is He)." Then, after I get what I want, I do not remember what I said. The question is: What is your advice in such a case? And if I forget, what is obligatory for me to do?
Should I exert my effort and do whatever I remember?

Answer:
This requires detailed explanation. If it is a vow that requires fulfillment, such as if you say, "I have vowed to Allah," or "It is upon me for Allah that if I succeed or such-and-such happens, I will pray such-and-such, or perform tawaf, or perform 'Umrah, or perform Hajj," then it is obligatory for you to fulfill it. It is obligatory for you to fulfill it based on the saying of the Prophet (peace and blessings be upon him): .
As for mere speech that you will do it, if Allah wills, that is a promise. The best for you is to fulfill it, and it is not a vow. So if you say, "If Allah wills, if I succeed, I will fast such-and-such, or pray such-and-such, or perform Hajj," then the best for you and what is prescribed for you is to fulfill this; because Allah said: [Surat al-Nahl: 91].
This is a type of covenant, even if you did not explicitly state the covenant, but it is a good promise. You should, when you do this, say, "If Allah wills, I will fast such-and-such, or pray such-and-such, or perform Hajj." The best and most preferable for you is to fulfill this thing, but it is not obligatory for you; because you did not explicitly state the covenant, and you did not explicitly state the vow.

The presenter: May Allah reward you.