Muhammad bin Abi Bakr al-Thaqafi said that he asked Sayyiduna Anas bin Malik (may Allah be pleased with him), as they were going from Mina to Arafah: What did you use to do on this day when you were with the Messenger of Allah (peace and blessings be upon him)? He said: The one saying the talbiyah would say the talbiyah and he was not stopped, and the one saying the takbir would say the takbir and it was not disapproved of.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9442