This excerpt is taken from Sheikh Ghulam Mustafa Zaheer Amanpuri's book Khatm-e-Nubuwwat.
Reformer in Every Century
The meaning of a reformer coming in every century is that no prophet will come after the Messenger of Allah, peace be upon him, because the work of prophethood will be done by a reformer, so what is the need for a prophet?
Sayyiduna Abu Hurairah, may Allah be pleased with him, narrates that the Messenger of Allah, peace be upon him, said:
إن الله يبعث لهذه الأمة على رأس كل مائة سنة من يجدد لها دينها
"Allah Almighty will send to this Ummah a reformer every hundred years."
Reference: (Sunan Abi Dawood: 4291, and its chain is Hasan)
