5.1 You must hold the tile bag as near as possible to shoulder level, and so that no tiles in the bag can be seen. Remove tiles in full view of your opponent.
5.2 You may not put your hand back into the bag while you still have tiles in that hand. All drawn tiles must be placed on the rack or table before drawing any more.
5.3 (Drawing too many tiles) If, before any newly drawn tile has been placed on the rack, you discover that you have too many tiles, you must place all the newly drawn tiles face down on the table and invite your opponent to remove the excess tile(s).
If any newly drawn tile has touched the rack, you must place all your tiles on the rack or the table and invite your opponent to remove the excess tile(s).
If it is your opponent who discovers that you have too many tiles, you must display your rack while they choose the excess tile(s) to be removed.
In each case, both players must see the tile(s) before they are returned to the bag.
5.4 (Drawing too few tiles) If you have too few tiles, you must draw the rest from whatever tiles are in the bag at that stage, even if your opponent has drawn tiles already.