It is narrated from Sayyiduna Thawban (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "A group of my Ummah will always remain upon the truth; those who forsake them will not harm them, until the Hour comes, and they will remain in that state."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجزية / 18825