In 1352 H, Muhammad bin Mansour bin Abdullah Al Jeraijeer Al Jledan Al Adwani, joined the Yemeni War under the leadership of King Faisal, advancing from the Hijaz to Yemen. His efforts contributed to a significant military and political victory, culminating in the signing of the Taif Treaty in 1353 H, which settled all border disputes between Saudi Arabia and Yemen. After returning triumphantly, Mohammed settled in Najran, where he established the “Al Jeraijeer Well” and a traditional arms market. The marketplace was enclosed by a mud-brick wall in the old town. Later in life, he fell seriously ill and passed away during a medical trip to Lebanon. His body was returned to Unaizah, where he was laid to rest among his kin, leaving behind a cherished legacy.