The marriage contract and one of the spouses does not pray
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The Shaykh:
If the day the marriage contract is made, he does not pray, and the woman does not pray either, then both are disbelievers at the time of the contract, and the contracts of disbelievers are upheld and they are not ordered to repeat them. However, if he is not praying and she is praying, then he is a disbeliever and she is a Muslim, so the contract is not valid, and it must be repeated if he repents to Allah the Exalted. Yes.
If the day the marriage contract is made, he does not pray, and the woman does not pray either, then both are disbelievers at the time of the contract, and the contracts of disbelievers are upheld and they are not ordered to repeat them. However, if he is not praying and she is praying, then he is a disbeliever and she is a Muslim, so the contract is not valid, and it must be repeated if he repents to Allah the Exalted. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، 72 من 175 /شرح بلوغ المرام/الصلاة/صلاة الخوف/صالح الفوزان/الحديث/كبار العلماء — youtube.com (1:02:50)
The Arabic text is a machine transcription of the audio recording.