Hadith.1144 - Imam Muhammad ibn Ali Al-Baqir (as) said: "If a group prays with a gap between themselves and the Imam that cannot be crossed, then that Imam is not considered an Imam for them. Any row whose members are praying following the prayer of an Imam but are separated from the row before them by a gap that cannot be crossed, that is not a valid prayer for them. If there is a barrier or a wall, their prayer is also invalid unless one is directly aligned with the door." Imam (as) also said: "These enclosures (maqasir) were introduced by tyrants, and there is no valid prayer for anyone who prays behind them, following the prayer of those within." Furthermore, Imam (as) said: "Any woman who prays behind an Imam but with a gap between her and him that cannot be crossed, her prayer is invalid." I (the narrator) asked: "If a person comes and wishes to pray, what should they do if She is beside the man?" Imam (as) replied: "He should enter between her and the man, and She should move slightly."