Lewis & Short

2. permissus, ūs, m. [permitto], leave, permission, class. and freq. in abl. with gen. of person, by one’s leave, etc.: permissu legis, Cic. Agr. 2, 14, 35; id. Balb. 19, 43: permissu tuo, id. Verr. 2, 3, 80, § 184; Vell. 2, 107, 2: Lentuli, Liv. 25, 6, 1; 5, 18, 2; 5, 21, 14; 7, 7, 8 al.: citra permissum praetoris; Dig. 42, 1, 15: sacerdotum, Vulg. Act. 26, 12.