The ruling on having intercourse with a wife on the day of her co-wife
Machine translationRead the Arabic original
Question:
Honorable Shaykh, if a man has intercourse with the first wife during the day of the second wife, is there a sin on him for that?
Answer:
Yes, peace be upon him, it is not permissible to have intercourse with a wife on the day of her co-wife. This is not permissible, but it is permissible to enter for a need, and it is permissible to dress her or prefer her only. As for intercourse, the Prophet (peace and blessings be upon him) touched her without touching her, without having intercourse with her, so this is not permissible. Yes.
Honorable Shaykh, if a man has intercourse with the first wife during the day of the second wife, is there a sin on him for that?
Answer:
Yes, peace be upon him, it is not permissible to have intercourse with a wife on the day of her co-wife. This is not permissible, but it is permissible to enter for a need, and it is permissible to dress her or prefer her only. As for intercourse, the Prophet (peace and blessings be upon him) touched her without touching her, without having intercourse with her, so this is not permissible. Yes.
Source
شرح بلوغ المرام من أدلة الأحكام [ صالح الفوزان ]، باب القسم — islamhouse.com (56:44)
The Arabic text is a machine transcription of the audio recording.