Maymuna bint Harith reported,

I brought the Messenger of Allah ﷺ water for his ritual bath after major impurity. He washed his hands twice or three times, then dipped his right hand into the vessel and poured water with it over his private parts, washing them with his left hand. He then struck his left hand against the ground and rubbed it vigorously. Next, he performed ablution as he would for prayer. He then poured three handfuls of water over his head, each a full handful, and washed the rest of his body. Afterward, he stepped away from where he had been standing and washed his feet.She said, "Then I brought him a towel, but he handed it back."

أخبرنا علي بن حجر قال أنبأنا عيسى عن الأعمش عن سالم عن كريب عن ابن عباس قال حدثتني خالتي

ميمونة قالت

أدنيت لرسول الله ﷺ غسله من الجنابة فغسل كفيه مرتين أو ثلاثا ثم أدخل بيمينه في الإناء فأفرغ بها على فرجه ثم غسله بشماله ثم ضرب بشماله الأرض فدلكها دلكا شديدا ثم توضأ وضوءه للصلاة ثم أفرغ على رأسه ثلاث حثيات ملء كفه ثم غسل سائر جسده ثم تنحى عن مقامه فغسل رجليه قالت ثم أتيته بالمنديل فرده