The Prophet ﷺ used to say, "Here I am, Allah, here I am. Here I am, You have no partner, here I am. Truly all praise, blessing, and dominion belong to You. You have no partner."
حدثنا محمد بن جعفر حدثنا شعبة عن زيد وأبي بكر ابني محمد أنهما سمعا نافعا يحدث
عن النبي ﷺ أنه كان يقول لبيك اللهم لبيك لبيك لا شريك لك لبيك إن الحمد والنعمة لك والملك لا شريك لك
Its isnad is sahih. Zayd is Ibn Muhammad bin Zayd bin Abdullah bin Umar bin Khattab, and he is trustworthy. Abu Hatim, Abu Dawud, and Nasai affirmed his trustworthiness, and Bukhari gave his biography in al-Kabir 1/2/369–370, saying, "He heard from his father and from Nafi."His brother Abu Bakr has a biography in al-Tahdhib, but Ibn Hajar was brief in al-Ikhtisar, and perhaps he simply overlooked it, for he did not mention those who narrated from him nor his affirmation of trustworthiness. In the margin of al-Khulasah, page 445, quoting from al-Tahdhib of Mizzi, what was missing from the biography is given, that Shubah and Atif bin Khalid Makhzumi narrated from him. Abu Hatim said, "Trustworthy, there is no harm in him." And in al-Taqrib as well, "Trustworthy." Bukhari also gave his biography in al-Kuna, number 60, and did not mention any criticism of him.This hadith is a repetition of 4997.