It is narrated from Sayyida Maymunah (RA) that the Messenger of Allah (peace and blessings be upon him) would use the upper part of his wives' lower garment while they were in the state of menstruation.
Hadith Referenceالفتح الربانی / كتاب الحيض والإستحاضة والنفاس / 937
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه مسلم: 294، وعلقه البخاري عقب الرواية: 303، (انظر مسند أحمد ترقيم الرسالة: 26854 ترقیم بيت الأفكار الدولية: 27391»
Brief Explanation
Benefits: … What is meant by using this part is kissing, touching, etc.; married people understand this.