The Canons of the Council in Trullo; Often Called The Quinisext Council 66Canon LXVI.

From the holy day of the Resurrection of Christ our God until the next Lord's day, for a whole week, in the holy churches the faithful ought to be free from labour, rejoicing in Christ with psalms and hymns and spiritual songs; and celebrating the feast, and applying their minds to the reading of the holy Scriptures, and delighting in the Holy Mysteries; for thus shall we be exalted with Christ and together with him be raised up. Therefore, on the aforesaid days there must not be any horse races or any public spectacle.