Salman al-Farisi (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "Whoever takes a bath on Friday and purifies himself as much as he can, then applies oil and some of his family's perfume, then sets out for Jumu'ah and does not separate between two people, and prays whatever is decreed for him, then when the imam comes stays silent, all his sins until the next Friday will be forgiven."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5892
Amr bin Shu'ayb narrates from his father, from his grandfather (Sayyiduna Abdullah bin Amr, may Allah be pleased with them both), that the Prophet (peace and blessings be upon him) forbade that a man sit between two men except with their permission.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5893