Although Musa is only mentioned in Spanish sources, which state that he killed himself to avoid capture by the Christians, many modern Muslim historians, such as Ragheb Sergani, confirm his historicity.
Inside the city, Musa led a movement that calls for continuing the jihad against the Christians and the rejection of surrender, saying that "a grave under the ruins of Granada, in the place I die defending, is better for me than the most lavish palaces we obtain by submission to the enemies of Islam."
Ferdinand V decided to march on the walls of Granada, and heavy fighting emerged between his forces and those of the Muslims, led by Muhammad XII and Musa.
Castillian sources claim he threw himself in the river behind him, subsequently drowning due to his heavy armor, to avoid capture.
Ragheb Sergani states that "the truth is that we don't expect Spanish sources to invent a Muslim personality that leads a great defense of Granada."
On the other hand, Muhammad Inan writes that "we mention the Castilian narrative here not to confirm its historical accuracy, but because it provides a great example for the Muslims' defense of their religion, homeland and their last base."