From ImamRezaR's Advices to his Shia
In the name of God
O Abd al-Azim Convey my Salem to my foIIowers and tell them not to allow Satan course of action against themselves. Bid them to truthfulness in speech and returning of the trusts and bid them to be silent and refrain from disputes in that which does not concern them. Invite them that they be friendly to one another and visit each other, for certainly it makes them close to me and that they should not busy themselves in teasing one another for certainly I have promised myself that one who does so and displeases a follower from my followers I will request God to punish him a severe punishment in this world , and in the hereafter he will be amongst the Iosers. And , Iet them know that cerainIy God has forgiven the virtuous amonges the and has overIooked the wrongdoers, exceps a person who ascribes partners to God , or offends a foIIower from my foIIowers or harbors eviI against him. For certainly God will not forgivr him unlrss he repents and turns away from doing evil actions. So if he turns away (from these actions) them God will forgive him but if he dous not , them essence of fith is taken away from his heart and Ieaves our WiIayah and does not have any share from our WiIayah. And,I seek refuge in God from such a state.
Bihar-Ul-Anvar-Vol 71.p.231.