Explanation

The conqueror conquest of Khyber was Hazrat Ali

Hazrat Ali killed Marhab while conquering the Qamus fort.

The Battle of Khaybar was fought in 628 CE (7Hijri)

Between the early Muslims led by Muhammad and Jews living in Khaybar.

93 Jews were killed 

15 Muslims got martyrdom 

3 caliphs were martyred due to the lake of water

The Battle of Khaybar Result: Muslim victory