Sunan Abi Dawud — The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj) — Hadith No: 1774
Translation
Narrated Anas ibn Malik: The Prophet (ﷺ) offered the noon prayer, and then rode on his mount. When he came to the hill of al-Bayda', he raised his voice in talbiyah