'Abdullah bin 'Umar reported on the authority of his father (RA) . He said: As we proceeded in the morning along with Allah's Messenger (ﷺ) from Mina to 'Arafat, some of us pronounced Talbiya, and some pronounced Takbir (Allah-o-Akbar).
Hadith ReferenceSahih Muslim / The Book of Pilgrimage / Hadith: 1284