Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Thawban (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A group from my Ummah will remain steadfast on the truth; those who disgrace them will not be able to harm them, until the command of Allah comes while they are in that state."