It is narrated from Hazrat Abu Dharr (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Two men are better than one, three are better than two, and four are better than three. Therefore, it is obligatory upon you to adhere to the congregation, for Allah Almighty will never cause my Ummah to agree upon anything other than guidance.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 21293
Hadith Gradingحکم دارالسلام:إسناده ضعيف جدا، البختري بن عبيد متروك الحديث وأبوه مجهول