Musnad Ahmad 32:129

'Abd al-Rahman narrated to us, Malik narrated to us, from Muhammad ibn Abi Bakr, who said: I asked Anas ibn Malik: "How did you use to do on a day like this?"—meaning the Day of 'Arafah. He said: "We were with the Messenger of Allah, may Allah bless him and grant him peace, and the one among us who would recite the Talbiyah would do so, and he would not be rebuked for it, and the one among us who would recite the Takbir would do so, and he would not be rebuked for it."