Asim bin Umar narrates: Sayyiduna Umar (may Allah be pleased with him) related: I asked the Prophet (peace and blessings be upon him): "To what extent is it lawful for a man to be intimate with his wife while she is menstruating?" The Prophet (peace and blessings be upon him) said: "Above the waist-wrapper."
Imam Abu Ya'la recorded it, and its narrators are the narrators of the "Sahih".
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1548