Second Council of Nicaea, Canon IV

That Bishops are to abstain from all receiving of gifts.

The Church’s herald, Paul the divine Apostle, laying down a rule (κανόνα) not only for the presbyters of Ephesus but for the whole company of the priesthood, speaks thus explicitly, saying, “I have coveted no man’s silver or gold, or apparel.  I have shewed you all things, how that so labouring ye ought to support the weak;” for he accounted it more blessed to give.  Therefore we being taught by him do decree, that under no circumstances, shall a Bishop for the sake of filthy lucre invent feigned excuses for sins, and exact gold or silver or other gifts from the bishops, clergy, or monks who are subject to him.  For says the Apostle, “The unrighteous shall not possess the kingdom of God,” and, “The children ought not to lay up for the parents, but the parents for the children.”  If then any is found, who for the sake of exacting gold or any other gift, or who from personal feeling, has suspended from the ministry, or even excommunicated, any of the clergy subject to his jurisdiction, or who has closed any of the venerable temples, so that the service of God may not be celebrated in it, pouring out his madness even upon things insensible, and thus shewing himself to be without understanding, he shall be subjected to the same punishment he devised for others, and his trouble shall return on his own head, as a transgressor of God’s commandment and of the apostolic precepts.  For Peter the supreme head (ἡ κερυφαία ἀκρότης) of the Apostles commands, “Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre but of a ready mind; neither as being lords over the clergy (τῶν κλήρων [A.V. God’s heritage]); but being ensamples to the flock.  And when the chief shepherd shall appear, ye shall receive a crown of glory that fadeth not away.”

Translation: Henry R. Percival, The Seven Ecumenical Councils, NPNF II.14 (1900), via CCEL.