De officio praefecti urbi liber singularis
Dig. 1,12,2Paulus libro singulari de officio praefecti urbi. Adiri etiam ab argentariis vel adversus eos ex epistula divi Hadriani et in pecuniariis causis potest.
Paulus, On the Duties of the Prefect of the City. According to an Epistle of the Divine Hadrian he can be applied to in cases brought by bankers or against them, and pecuniary cases can, for the most part, be tried before him.