Musannaf Ibn Abi Shaybah

When Yahya used to pray, he had such concentration in prayer as if he were talking to a person.

Hazrat Yahya bin Wathab says that when the predecessors saw a funeral, its effects would remain on their faces for several days.

When Hazrat Yahya bin Wathab completed the prayer, the effects of the prayer would remain visible on his face for quite some time.