The Prophet (may Allah's peace and blessings be upon him) forbade making a vow, which means that a person obliges himself to do something not ordained upon him by the Shariah. He said: A vow does not advance anything or postpone it. Rather. it is only a means whereby something can be extracted from the miser who only does what is obligatory for him; and a vow does not bring about something that had not been predestined for him.

• It is not prescribed in the Shariah to make a vow, but if a person makes one, he is obligated to fulfill it, unless it involves a sin.
• The cause for the forbiddance is that "it does not bring good", as it cannot ward off anything decreed by Allah, and lest a vow maker may think that the fulfillment of his need was the result of the vow. Allah Almighty is Free of need for that.
• Al-Qurtubi said: This forbiddance lies where one may say, for example: If Allah cures my sick person, I shall give such and such in charity. The reason behind dislike is that when he made the mentioned act of piety dependent upon the mentioned purpose, it appeared that he did not have the intention to draw close to Allah Almighty for what He did, but he took the path of compensation in this regard. This is made clear by the fact that if He did not cure his sick person, he would not give the charity he made conditional upon this cure. Such is the attitude of a miser, who does not give anything of his money without immediate compensation that is mostly higher than the given amount.

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2. Jurisprudence and Juristic Principles
3. Jurisprudence of Transactions
4. Oaths and Vows
5. Hadith

• If anyone undertakes to take a false oath to appropriate the wealth of a Muslim, he will meet Allah while He is angry with him.
• By Allah, Allah Willing, if I ever take an oath and then see that another option is better than the first, I will make expiation for my oath and do what is better
• If anyone takes a false oath in order to seize the wealth of a Muslim unlawfully, he will meet Allah when He is angry with him
• My sister vowed to walk to the Sacred Mosque barefoot. Then, she asked me to ask the Messenger of Allah (may Allah's peace and blessings be upon him) about it. I asked him, and he replied: "Let her walk and ride."