What is the Sunnah regarding the congregants' gaze during the Friday sermon?

The Prophet (peace and blessings be upon him) and his Companions would face the Imam when he ascended the minbar for the khutbah. This is the practice of the people of knowledge, and it is recommended by Al-Thawri, Al-Shafi'i, Ahmad, and Ishaq, due to the etiquette involved and the preparation for listening to and understanding the khutbah.