Musannaf Ibn Abi Shaybah

Hazrat Muslim narrates that during the time of Ziyad, I was sitting with Hazrat Masruq and Hazrat Abu Ubaidah. When the time for Zuhr entered, both of them performed the Zuhr prayer, then sat down, and when the muezzin gave the call to prayer, they also prayed with the imam, and they used to do the same in the Asr prayer as well.