I suggest that he means during final approach pick up a wing with rudder. Coarse application of aileron near stall speed could be dangerous. Use the ailerons for directional control i.e. keeping on the centreline.
Hermie.
Some of the posters on here have given you some good advice. This Isn't one of them.
On the face of it, your instructor's advice doesn't make any sense. I suspect that there may be some misunderstanding between you.
MJ