Muslim (262) narrated that Salmaan (may Allaah be pleased with him) said: He (meaning the Prophet (peace and blessings of Allaah be upon him)) forbade any one of us to clean himself with his right hand.
And Muslim (2020) narrated from Ibn ?Umar (may Allaah be pleased with him) that the Messenger of Allaah (peace and blessings of Allaah be upon him) said: ?No one among you should eat with his left hand or drink with it, for the shaytaan eats with his left hand and drinks with it.?
Why did this rule come about from Muhammad? What was the historical significance of it that Mo made it a rule
It seems Muhammad had a pride problem too. If no one followed his rule, he would always wish and pray against him
In Saheeh Muslim (2021) it is narrated that a man ate with his left hand in the presence of the Messenger of Allaah (S). He said: ?Eat with your right hand.? He said: I cannot. He said: ?May you never be able to,? for nothing was preventing him from doing so but arrogance. And he never raised it to his mouth again.
The Prophet (peace and blessings of Allaah be upon him) prayed against him so that what he claimed of not being able to do it would come true, because he was too arrogant to follow the truth and he did not observe proper etiquette with the Prophet (peace and blessings of Allaah be upon him), and his excuse was a lie, and lying to the Prophet (peace and blessings of Allaah be upon him) is not like lying to anyone else.
http://www.islam-qa.com/en/ref/82120