Prophet Muhammad's sayings:
The Prophet said that "the believers, in their love, mercy, and kindness to one another are like a body; if any part of it is ill, the whole body shares its sleeplessness and fever."
The most perfect of the believers in faith are the best of them in morals. And the best among them are those who are best to their wives.
None of you (believes) completely until he loves for his brother what he loves for himself.
He, the Prophet Muhammad is also reported to have said, "The merciful are shown mercy by the All-Merciful (Allah). Show mercy to those on earth, and God will show mercy to you."
Smiling at your brother is charity.
A good word is a charity.
