In the 5th year of Islam as the tortures and hardships for the Messenger of Allah (PBUH) and his followers became worse, Muhammad (PBUH) gave the Muslims permission to immigrate to the friendly country of Abyssinia (Ethiopia). It was ruled by very good and trustworthy king called Negus (Najjashi), who later accepted Islam.
In the 6th year of Islam, Hamza bin Abdul Muttalib (RA) (uncle of Muhammad (PBUH) and Umar bin Khattab (RA) became Muslims. By them accepting Islam, the Muslims became stronger and they started praying openly in the Ka’bah. The chiefs of the Quraysh were shocked and they all joined forces to crush Islam.