How did the Prophet (peace and blessings be upon him) marry his daughters to disbelievers?
Machine translationRead the Arabic original
The questioner : These daughters, if we say that they were naturally children, how did he marry them off? We said gradually, and whenever he offered his daughters to them, it is also a problem, God forbid, given the circumstances for him to do so. How did he respond?
The Shaykh : No, there is no doubt that he wanted to marry them off in accordance with the Shari'ah, but we do not know the number of the Shari'ah with them. Did it agree with our Shari'ah in forbidding marriage to a disbeliever, or not? Because you know that the prohibition of marriage to a disbeliever was not revealed until later, after Badr.
The Shaykh : No, there is no doubt that he wanted to marry them off in accordance with the Shari'ah, but we do not know the number of the Shari'ah with them. Did it agree with our Shari'ah in forbidding marriage to a disbeliever, or not? Because you know that the prohibition of marriage to a disbeliever was not revealed until later, after Badr.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 455مناقشة في حكم مس الذكر والمرأة..📔 الشرح الممتع على زاد المستقنع - ابن عثيمين - مشروع كبار العلماء — youtube.com (1:08)
The Arabic text is a machine transcription of the audio recording.