Ala. Code § 45-28A-42.63

If any member of the police or fire department of a city to which this subpart applies is, on proper application, found by the board of trustees to be physically or mentally permanently disabled so as to render him or her unable to fulfill the duties of his or her particular position, or job, the board of trustees shall order and direct, the payment of the proper amount of money as prescribed in this subpart, after the board of trustees has directed, or approved, the retirement of a physically or mentally disabled member.