Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) says that the Prophet (peace and blessings be upon him) said: "Three kinds of people attend the Friday prayer: one who attends and engages in idle talk; that is his share of it. The second, who attends for the purpose of supplication; he supplicates to Allah, and if Allah wills He grants him, and if He wills He withholds from him. The third, who attends and remains silent, neither stepping over the neck of any Muslim nor harming anyone; his reward is that it is an expiation for his sins from one Friday to the next, and indeed for three additional days. This is the saying of Allah Almighty: 'Whoever brings a good deed will have ten times the like thereof' [Surah al-An'am: 160]; whoever does one good deed will have it tenfold."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5831