“Abu ‘Abd Allah (a.s.) has said, ‘Wherever three or more believing people gather together an equal number of angels also attend it (gathering). If they pray for a good purpose the angels say Amen! If they seek protection (from Allah) against an evil matter, the angels pray to Allah to divert it from them. If they pray so their wishes come true, the angels intercede for them before Allah and pray to Him to grant their wishes. Wherever three or more rejectors (of belief) gather together, ten times their number, Satan also attends it. If they speak Satan also speaks likewise, if they laugh, they (Satans) laugh with them. If they succeed (in abuse) against the friends of Allah, they (Satans) do the same. If any of the believing people is trapped among them and when they involve themselves in such behaviors he should move away from them so he does not become of the attendance along with Satan; the wrath of Allah, the Most Majestic, the Most Holy, is insurmountable and His condemnation is irremovable.’ The Imam (a.s.) then said, ‘If he cannot do so (move away) he must condemn it in his heart and stand up even for a short while and move a little, like the time of allowing the young animal to have its share of milk while milking the mother.’”