Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: "The polytheists used to say this talbiyah: 'Labbayka Allahumma labbayk, labbayka la sharika laka illa sharikan huwa lak, tamlikuhu wa ma malak' (Here I am, O Allah, here I am; You have no partner except a partner who is Yours; You own him and whatever he owns)." So Allah, the Mighty and Majestic, revealed this verse: "Do you have, among those whom your right hands possess, any partners in what We have provided you, so that you are equal in it, and you fear them as you fear one another?"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12296