Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "There is none among you except that a shaitan (jinn) who is his companion and a companion from among the angels has been appointed for him." The companions asked: "O Messenger of Allah (peace and blessings be upon him), is it the same with you as well?" He replied: "Yes, there is a shaitan with me as well, but Allah Almighty has helped me against him and he has become obedient to me, or I am protected from him."
Imam Muhammad al-Darimi (may Allah have mercy on him) said: Aslam means he has become obedient.