In the 1270s anengaged, he engaged in repeated attempts to capture the rival Emirate of Mecca to the south from its ruler, Abu Numayy Muhammad ibn Abi Sa'd.
[4] In 1266/7, Malik ibn Munif, having come of age, sought to claim his father's inheritance, and turned to the Mamluk sultan Baybars, the suzerain of Medina.
Baybars acceded to Malik's request, appointing him co-emir and giving him half the revenue from the charitable endowments destined for Medina from his domains in Egypt and Syria.
Despite this, Malik suddenly and for reasons that remain unclear, resigned from his office and restored Jammaz to his prior position as sole emir.
The first designs against Mecca may have arisen as early as 1268/9, when Abu Numayy expelled Idris ibn Qatadah from the city, but nothing materialized at the time.
His rule lasted only a few months, however, as the Mamluk commander realized that he had been duped, and began negotiations with Abu Numayy instead, obliging Jammaz to return to Medina.