What is Virtue and Sin?
Nawwas bin Sam`an (radi Allahu anhu) said, “I asked the Messenger of Allah (sal Allahu alaihi wa sallam) about virtue and sin, and he said, ‘Virtue is noble behavior, and sin is that which creates doubt and you do not like people to know about it.’”
We benefit from the above Hadith a very important principle which is enshrined in this Hadith which is that courtesy is a virtue, because a refined mind cultivates good habits, performs good deeds, and shuns all that is bad and corrupt.
Also, a simple and understandable principle is laid down about sin. Man feels the pricking of conscience over every bad deed and is also afraid of the reproach of fault-finders, provided he has not reached the lowest point of moral depravity. But a seared conscience is least disturbed even by a heinous and deadly sin or by public censure.
We can understand it by the example of man’s smelling sense. If it is not dead, man can feel a stink and repugnant odor. But a long association with a dung heap robs away one’s smelling sense and feeling of refuse.
And Allah knows best!