2 verses have
observe
in Edition Clear Qur'an by Talal Itani / Al-Hajj (The Pilgrimage)

22:41Those who, when We empower them in the land, observe the prayer, and give regular charity, and command what is right, and forbid what is wrong. To God belongs the outcome of events.

22:67For every congregation We have appointed acts of devotion, which they observe. So do not let them dispute with you in this matter. And invite to your Lord; you are upon a straight guidance.