In the mosque the which is closest to me while in work the imam clean shaves, I have checked over a week he grows beard well bit shaves it, can I pray behind him ? Can I pray in the second congregation to avoid praying behind him ?

Ustadh AbdulAziz al-Haqqan

Pray behind him, the prayer is valid, and Ahl as-Sunnah pray behind the righteous and the sinful; his shaving is a sin on him and does not touch your prayer.