A woman came to the Prophet ﷺ and asked, "Messenger of Allah, how do I purify myself after menstruation?"He replied, "Take a piece of cloth scented with musk and purify yourself with it."She asked, "How do I purify myself with it?"He said, "Purify yourself with it."She asked again, "How do I purify myself with it?"The Messenger of Allah ﷺ, showing modesty, turned his face away and said, "Purify yourself with it."Ayesha said, "I understood what the Messenger of Allah ﷺ meant, so I took her aside, drew her toward me, and explained to her what the Messenger of Allah ﷺ intended."
قال حدثنا عفان قال حدثنا وهيب قال حدثنا منصور بن عبد الرحمن عن أمه
أن امرأة أتت النبي ﷺ فقالت يا رسول الله كيف أغتسل عند الطهر فقال خذي فرصة ممسكة فتوضئي قالت كيف أتوضأ بها قال توضئي بها قالت كيف أتوضأ بها ثم إن رسول الله ﷺ سبح فأعرض عنها ثم قال توضئي بها قالت عائشة ففطنت لما يريد رسول الله فأخذتها فجذبتها إلي فأخبرتها بما يريد رسول الله ﷺ
Its isnad is sahih. Mansur bin Abdul-Rahman is al-Abdari, and his mother is Safiya bint Shayba. The hadith was narrated by Bukhari 1/414, no. 314 (Fath), and Muslim 1/261, no. 332, both in the chapter on menstruation, and Abu Dawud 1/85, no. 314, and Ibn Majah 1/210, no. 642, and Bayhaqi 1/183, all in the chapter on purification.