“Once Abu ‘Abdillah (a.s.) said, ‘O ‘Abd al-‘Aziz, belief is of ten stages like the steps of a ladder. To climb, one uses it one step after the other one by one. One who possesses two degrees of belief should never say to one who possesses only one degree that he does not have enough belief and so on up to the tenth degree or stage. One who is higher should not throw back the one below because the one above you may also fall. If you see one below, you should help him climb up higher gently and do not burden him with what he cannot lift up; he may break down and if one breaks down a believer, he will be held responsible for compensation to him.’”