Ibn Abbas said: Duba`ah, daughter of al-Zubair bin Abd al-Muttalib, came to the Messenger of Allah ﷺ and said Messenger of Allah ﷺ I want to perform Hajj; may I make a provision? He said Yes. She asked how should I say? He replied: Say “ Labbaik Allahumma Labbaik (I am at Thy service, Oh Allah, I am at Thy service). The place where I took off Ihram will be where Thou restrainest me. ”
Hadith Referenceسنن ابي داود / كتاب المناسك / 1776
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:صحيح, أخرجه الترمذي (941 وسنده حسن) ورواه مسلم (1208)