Sunan Abi Dawud 1795
سنن أبي داود#1795SahihAnas bin Malik said I heard the Apostle of Allaah(ﷺ) uttering talbiyah(labbaik) aloud for both Hajj and ‘Umrah. He was saying in a loud voice “Labbaik for ‘Umrah and Hajj, labbaik for ‘Umrah and Hajj”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (1251)
In-book reference: 11:75