Abu Dharr (May Allah be pleased with him) reported: The Prophet ﷺ said, "Do not belittle any good deed, even meeting your brother (Muslim) with a cheerful face". Muslim.
The Prophet ﷺ was teaching us here that we must always strive to do good deeds, no matter how insignificant they may seem at first glance. He was reminding us that even something as simple as smiling at someone or greeting them warmly can make their day brighter and help build strong relationships between people. We must never underestimate the power of kindness, for it has the potential to bring about great change in our lives and those around us.