صَلاةُ الرَّجُلِ فِي جَمَاعَةٍ خَيْرٌ مِنْ صَلاتِهِ فِي بَيْتِهِ أرْبَعِينَ سَنَةً. One prayer of a person in congregation is worthier than his forty years of performing prayer at home (individually).
Mustadrak al-wasa'il, Volume 6
Rasul Allah Hazrat Muhammad (Peace and blessings of Allah be upon him and his progeny)Hadith