Musnad Ahmad 317:1

Waki’ narrated to us, he said: Yahya ibn Abi al-Haytham al-‘Attar narrated to us, he said: I heard Yusuf ibn ‘Abd Allah ibn Salam—and he said once: He heard it from Yusuf ibn ‘Abd Allah ibn Salam—who said: "The Messenger of Allah (ﷺ) named me Yusuf and wiped over my head."