Explanation

Salah udin Ayyub is historically credited with significant conquests in the region including Bait-ul-Maqdis. Muhammad bin Qasim conquered areas in Sindh and parts of the Middle East but not specifically known for conquering Bait-ul-Maqdis. Musa bin Nusair was involved in early Islamic expansion but his primary focus was elsewhere. Tariq bin Ziad is associated with other military actions, but Salah udin Ayyub's role is more directly linked to this conquest.