And if its end is better in some respect and the vow is made...

And if its end is better in some respect and the vow is made with that intention for example, if he makes a vow that he will eat a certain food in order to gain strength for worshipping Allah his vow is in order. And if its abandonment is better in some respect and the vow to abandon it is made with that view for example, as tobacco is harmful and a person makes a vow not to use it, his vow is in order. 2659.

If a person makes a vow that he will offer his obligatory prayers at a place, where offering prayers does not in itself carry higher spiritual reward for example, he makes avow to offer his prayers in a certain room and offering prayers there is better in some respects for example owing to solitude he is enable to offer prayers with perfect devotion and presence of mind, his vow is in order. 2660. If a person makes a vow to perform an act he should perform it according to his vow.

In case, therefore, he makes a vow to give alms, or to fast on the first of the month, or to offer prayers of the first of the month, and performs these acts before that day or after it, it does not suffice. Moreover, if he makes a vow that he will give alms when his patient recovers, but gives alms before the recovery of the patient it does not suffice. 2661.

If a person makes a vow that he will fast but does not specify the time and number of fast it is sufficient if he observes fast on one day. And if he makes a vow that he will offer prayers but does not specify its quantity and particulars, it is sufficient if he offers one two rak'at prayers. And if he makes a vow that he will give alms, but does not specify its quality or quantity and he gives something about which it may be said that he has given alms he has performed his vow.

And if he makes a vow that he will do something to please the Almighty Allah he fulfill his vow, if he offers one prayers, or observes one fast, or gives away something by way of alms. 2662. If a person makes a vow that he will observe fast on a particular day, he should observe fast on that very day; and in case he does not observe fast on that day intentionally he should, besides observing the lapsed fast of that day, also make atonement for it.

And what is more apparent is that its atonement is the same as it is for violating the oath, as will be told later.