NCAA 9-2d

The pitcher may go to his mouth anywhere on the mound if he is not in contact with the rubber and distinctly wipes it off before pitching.

PENALTY: A ball is called each time a pitcher violates.

[OBR 6.02c1: The pitcher may not touch his hand to his mouth without wiping it off while in the 18-foot circle surrounding the pitcher’s plate. PENALTY: Ball]