Musnad Abu Ya'la al-Mawsili 118:28

Muhammad ibn Abd Allah ibn Numayr narrated to us, Abu Mu'awiyah narrated to us, from Isma'il ibn Muslim, from al-Zuhri, from Anas: That the Messenger of Allah (may Allah bless him and grant him peace) used to recite the Talbiyah: "Labbayk Allahumma Labbayk, Labbayk la sharika laka Labbayk, inna al-hamda wa al-ni'mata laka wa al-mulk, la sharika lak" (Here I am, O Allah, here I am. Here I am, there is no partner for You, here I am. Indeed, all praise and grace are Yours, and the dominion; there is no partner for You).