There is no doubt that Allāh chose the Salaf al-Ṣāliḥīn for the preservation of Islām. They strove day and night to purify societies and correct what had become corrupt in this Ummah.
Our noble Messenger (ﷺ) came with a universal message. His message was not restricted to a certain place, tribe, or nation. It was not meant for a limited period either.
