Translation:

108. Never stand thou forth therein. There is a mosque whose foundation was laid from the first day on piety; it is more worthy of thy standing forth (for prayer) therein. In it are men who love to be purified; and Allah loveth those who make themselves pure.

Notes (Tafseer)

1357. The original "Mosque of Piety" built by the Holy Prophet himself.

1358. The true Muslim must be pure in body, mind, and heart. His motives should always be sincere, and his religion without any alloy of worldy gain.