Imam Hasan Al-’Askari (a.s.) said:
مِنَ الذُّنُوبِ الَّتِى لا يُغْفَرُ: ليتنى لا اُؤاخَذُ إلاّ بِهَذا!
One of the sins that would not be forgiven is for a man to say, “I wish my sin to be only this one.”1
Minor sins are changed to major sins due to several factors, one of which is to consider them to be little and unimportant. This is one of the dangerous satanic temptations.
Those sins which man fears and considers as major sins are not so dangerous because one is always careful not to commit them. But when he assumes a sin to be minor and is not afraid of it, he is easily drawn to it again and again; minor sins change to major, keeping him away from happiness and prosperity for ever. Furthermore, every sin, however small, is significant in one respect : it exceeds the bound of rules of Allah, the Almighty.