Fulfilling an oath on behalf of another by eating
Machine translationRead the Arabic original
The questioner:
If a man swears an oath on behalf of another man to eat lunch with him, for example, does the man have to do it, or does the man who swore have to?
The Shaykh:
You have to break your fast, you have to break your fast.
The questioner:
This issue does not arise.
The Shaykh:
Yes, you have to. I mean, this is a known rule, or a known rule, yes.
If a man swears an oath on behalf of another man to eat lunch with him, for example, does the man have to do it, or does the man who swore have to?
The Shaykh:
You have to break your fast, you have to break your fast.
The questioner:
This issue does not arise.
The Shaykh:
Yes, you have to. I mean, this is a known rule, or a known rule, yes.
Source
شرح كتاب المنتقى من أخبار المصطفى صلى الله عليه وسلم [ الشرح الأول ]، بداية من باب من صلى في قميص غير مزرر تبدو منه عورته في الركوع أو غيره — islamhouse.com (1:11:58)
The Arabic text is a machine transcription of the audio recording.