Silsilah as-Sahihah 144 — Renewal of religion every century

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, Allah will continue to send some individuals for this Ummah at the head of every hundred years to renew the religion for it."

It is narrated from Sayyiduna Hudhayfah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Allah Almighty creates every kind of craftsman (or artisan) and his skill (or craft)."