فَهُنَالِكَ تَذِلُّ الاْبْرَارُ...
However extremely eager a person may be to secure the pleasure of Allah, and however fully he strives for it, he cannot discharge (his obligation for) obedience to Allah, the Glorified, as is really due to Him, and it is an obligatory right of Allah over the people that they should advise each other to the best of their ability and co-operate with each other for the establishment of truth among them.
No person, however great his position in the matter of truth, and however advanced his distinction in religion may be, is above co-operation in connection with the obligations placed on him by Allah. Again, no man, however small he may be regarded by others, and however humble he may appear before eyes, is too low to co-operate or to be afforded co-operation in this matter.
One of Amir al-mu'minin's companions replied to him by a long speech wherein he praised him much and mentioned his own listening to him and obeying him, whereupon Amir al-mu'minin said: فأجابه عليه السلام رجل من أصحابه بكلام طويل، يكثر فيه الثناء عليه، ويذكر سمعه وطاعته فقال عليه السلام: If a man in his mind regards Allah's glory as being high and believes in his heart that Allah's position is sublime, then it is his right that on account of the greatness of these things he should regard all other things small.
Among such persons, he on whom Allah's bounty is great and Allah's favours are kind has a greater obligation, because Allah's bounty over any person does not increase without an increase in Allah's right over him.