Nicene and Post-Nicene Fathers, Ser. II, Vol. XIV:
The Canons of the Council in Trullo; Often Called The Quinisext Council.: Canon X

Canon X.

A bishop, or presbyter, or deacon who receives usury, or what is called hecatostæ, let him desist or be deposed.

Notes.

Ancient Epitome of Canon X.

A bishop, presbyter, or deacon who takes usury shall be deposed unless he stops doing so.

See notes on canon XVI. of Nice, and the Excursus thereto appended.