Jami’ al-Tirmidhi 25813

“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’ al-Tirmidhi 25814

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’ al-Tirmidhi 25815

he saw the Prophet performing Wudu, and that he wiped his head with water that was not left over from his hands.

Jami’ al-Tirmidhi 25817

“The Prophet performed Wudu; so he washed his face three times, and his hands three times, and wiped his head, and he said: “The ears are part of the head.”