A benefit from the hadith: (…so he said, “No, I drank honey at the house of Zaynab bint Jahsh, and I will not return to it…”) regarding the vow of commitment.

The Shaykh : He said meaning he will not return to drinking honey at her house. Allah called this a prohibition, even though he said, “I will not return to it.” However, his saying “I will not return to it” is a commitment not to return. A benefit is derived from this: the vow of commitment is established by whatever indicates it, even if the word “vow” is not used, just as a prohibition is established by whatever indicates it, even if the word “prohibition” is not used. Is that not so? The one with us now said, “I will not return to it,” without explicitly stating a prohibition, but this is a commitment not to return, which is a prohibition upon himself. Likewise, for a vow, it is not required to say, “I have a vow upon me for Allah”; rather, whatever indicates a commitment is a vow.