Allah Ta’ala has preserved our din throughout the centuries.
If any person in any era or area wants to follow the din of Islam, or wants to know the commands of Allah Ta’ala or the Sunnah of the daily activities of Rasulullah (sallallahu ‘alayhi wasallam) then everything is preserved.
This was possible through the Sahabah (radiyallahu’anhum) preserving the Din and passing it on.
The link between the rest of mankind and Rasulullah (sallallahu ‘alayhi wasallam) are the Sahabah (radiyallahu ‘anhum)
Listen to my talk about the virtues of the Sahabah (radiyallahu ‘anhum)