Do not belittle any good deed; meet other Muslims with a cheerful face; strive to do your best in all aspects of life; remain positive; spread cheerfulness among fellow Muslims.

In this hadith, the Prophet Muhammad is teaching us the importance of small deeds. He advises Abu Dharr to not belittle any good deed, no matter how small it may seem. Even something as simple as meeting another Muslim with a cheerful face is considered an act of kindness and should not be taken lightly. This hadith emphasizes that we should always strive to do our best in all aspects of life and that even the smallest acts can have great rewards in the hereafter. It also teaches us to always remain positive and spread cheerfulness among our fellow Muslims.