"The Prophet wiped his head two times: He began with the rear of his head, then with the front of his head and with both of his ears, outside and Inside of them."
Jami` at-Tirmidhi Book 1, Hadith 33
← Previous Hadith "Allah's Messenger wiped over his head with his hands, going over the front with them and the rear. He began with the front of his head until they went to the nape of his neck. Then he brought them back again to the place where he began. Then he washed his feet."

Jami` at-Tirmidhi Book 1, Hadith 32 Next Hadith → she saw the Prophet performing Wudu. She said: "He wiped his head, and what is in the front of it and what is in its rear, and his temples and his ears one time."

Jami` at-Tirmidhi Book 1, Hadith 34