´It was narrated that Abu Hurairah said:` "Part of the Talbiyah of the Messenger of Allah was: 'Labbaika ilahal-haqq (Here I am, O God of truth)." (Sahih) Abu 'Abdur-Rahman (An-Nasa'i) said: I do not know of anyone who narrated a chain for this from 'Abdullah bin Al-Fadl except for 'Abdul-Aziz. Ismail bin Umayyah reported it from him in Mursal form.
Hadith Referenceسنن نسائي / كتاب مناسك الحج / 2753
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح
Hadith Takhrij«سنن ابن ماجہ/الحج15 (2920)، (تحفة الأشراف: 13941)، مسند احمد (2/341، 352، 476) (صحیح)»