Sahih Muslim – Hadith No : 374

Ibn ‘Abbas reported: We were with the Apostle of Allah (may peace be upon him) and he had come out of the privy. Food was presented to him. It was said to him (by the Companions around him): Wouldn’t you perform ablution? Upon this he said: Why, am I to say prayer that I should perform ablution?

Hadith In Arabic Text :

وحدثنا أبو بكر بن أبي شيبة، حدثنا سفيان بن عيينة، عن عمرو، عن سعيد بن الحويرث، سمعت ابن عباس، يقول كنا عند النبي صلى الله عليه وسلم فجاء من الغائط وأتي بطعام فقيل له ألا توضأ فقال ‏”‏ لم أأصلي فأتوضأ ‏”‏ ‏.‏

Chapter : The Book of Menstruation – كتاب الحيض