5p TOUCHING A BALL.
If a players body, clothing, jewellery or accessory, or part of a cue, with the exception of the tip in a legal shot, touches a ball it is a foul.
A tip falling off a cue, or chalk dropped, is a players responsibility.
Should these contact any ball on the table it is a foul.
A player is responsible for equipment brought to the table but not that supplied at the tournament. If the end falls off a rest that has been provided for a tournament and it contacts a ball this is not a foul. This is supplied equipment.
Only if it is a players own equipment is it a foul.