Hanafi scholars agree on the method of bowing.
Gently grasping the knees but not actually gripping it tightly while the head and the back should remain at horizontal level (to one’s ability).
Arms are kept straight without bending the elbows away from one’s side.
Legs are kept straight without bending the knees.
Gaze should be fixed between the feet during Rukoo’ keeping the head at the level.