The Messenger of Allah ﷺ said in his talbiyah, "Here I am, God of Truth, here I am."
حدثنا أبو بكر بن أبي شيبة وعلي بن محمد قالا حدثنا وكيع حدثنا عبد العزيز بن عبد الله بن أبي سلمة عن عبد الله بن الفضل عن الأعرج
أن رسول الله ﷺ قال في تلبيته لبيك إله الحق لبيك
[Sahih isnad]. Nasai narrated it in Manasik al-Hajj, chapter "Kayfa al-talbiyah," no. 2753, from the hadith of Abdul-Aziz, through this route. Ibn Khuzayma graded it sahih, 4/172, no. 2623, as did Ibn Hibban (Mawarid), no. 975, and Hakim, who said it meets the conditions of the two Shaykhs, 1/449-450, and Dhahabi agreed with him.