Khallad ibn Saib reported from his father that Allah’s Messenger (SAW) said, “Jibrail came to me and instructed me to command my Companions that they should raise their voices on reciting the talbiyah.” (The narrator was not sure which word the Prophet used : ihlal or talbiyah).
[Ahmed16569, Abu Dawud 1814, Nisai 2752, Ibn e Majah 2922]
--------------------------------------------------------------------------------