Can a vow-maker eat from the food he offered in fulfillment of his vow?

Question 24: If a person offers food for the poor in fulfillment of his vow, is it permissible for him to eat from that food?

Answer:  The basic ruling is that if the thing that is offered in fulfillment of a vow is permissible, it will be a must to spend it on the channels specified by the person who made the vow. If he did not specify a channel, it should be considered as Sadaqah (voluntary charity) that is to be spent on the poor and needy..read more here.

Making a vow to other than Allaah

Question 18I made a vow to offer a sacrificial animal to Shaykh `Abdul-Raheem Al-Qinawee, but a righteous friend of mine met me and told me that it is not permissible for me to do so, as such a practice is regarded as Shirk (associating others with Allaah in His Divinity or worship). Thus, I decided to do nothing until I receive a Fatwaa on this question from Your Eminence. It is worth mentioning that my sons sold the animal I made a vow to slaughter, but its price is still with me. We would be grateful if you could tell us whether offering sacrificial animals to such dead shaykhs is Haraam (prohibited) or not? If such a practice is prohibited, what should we do with regards to the vow? We would be grateful if you could send the reply as soon as possible.

Answer: It is prohibited to offer a sacrificial animal to the dead shaykh whose name is mentioned above or to other shaykhs, as offering sacrificial animals is an act of `Ibaadah (worship) through which a Muslim can get closer to their Lord and offering them to other than Allaah is regarded as major Shirk (associating others with Allaah in His Divinity or worship that takes the Muslim out of Islaam)... read more here.

Vowing to other than Allaah is a major Shirk

Question 25: Some people vow to give Sadaqah (voluntary charity) or offer a sacrifice to attain what they want; some in hope of recovery, others of restoring a lost right, and so on. Some devote their vows to Allaah sincerely or for the sake of Allaah’s Love,others offer the vow to other people. Please, advise me on this matter and clarify the correct way of offering a vow. May Allaah admit you to the best of life and Hereafter.

Answer: Firstly, Vowing is an undesirable act for a Muslim, for it is authentically reported that the Prophet (peace be upon him) said… read more here.

Ruling on Vowing

Question 24: Some people vow to give Sadaqah (voluntary charity) or offer a sacrifice to attain what they want; some in hope of recovery, others of restoring a lost right, and so on. Some devote their vows to Allaah sincerely or for the sake of Allaah’s Love,others offer the vow to other people. Please, advise me on this matter and clarify the correct way of offering a vow. May Allaah admit you to the best of life and Hereafter.

Answer: Firstly, Vowing is an undesirable act for a Muslim, for it is authentically reported that the Prophet (peace be upon him) said… read more here.