No, not those friends with benefits. We’re talking about real benefits: the right to power and land. The granting of those rights formed the backbone of the Frankish economic, political, and social worlds.
The Germanic tribes, of which the Franks were one, had a custom in which war band leaders granted their faithful followers land or gold, both to reward them and to bind them to the leader in the future. By the 6th and 7th century this custom was practiced on a greater scale.1.Stephenson, Mediaeval Feudalism, pp.2 – 6. The essential elements remained the same: a man pledged himself to his lord (fealty and homage), and the lord in turn granted his new man something material in return, as well as the promise of protection.
By the 8th century under this tradition the king (or the mayors of the palace, acting in the king’s name) would grant usage of something valuable to one of his loyal followers. This grant, known as a benefice,2.From the Latin beneficium, a noun meaning a benefit. was made for, and in expectation of, past and future service to the king. The benefice could be fishing rights, a toll, an administrative office, or land.