Examples
Who told you to write with your left hand?
Source: Tatoeba
My right hand is Uighur, and my left is Han.
Source: Tatoeba
Otherwise, it is considered impolite to pass food with the left hand, because the left hand is used for bathing.
Source: Tatoeba
The enchantress clutched Rapunzel's beautiful tresses, wrapped them twice round her left hand, seized a pair of scissors with the right, and snip, snap, they were cut off, and the lovely braids lay on the ground.
Source: Tatoeba