Canon XXXVII. It Is Not Lawful to Receive Portions Sent from the Feasts of Jews or Heretics, nor to Feast Together with Them · Canon XLI. None of the Priesthood nor of the Clergy May Go on a Journey, Without the Bidding of the Bishop
Canon LXXX
Page 432 of 706
If any bishop, or presbyter, or deacon, or any of those who are enumerated in the list of the clergy, or a layman, has no very grave necessity nor difficult business so as to keep him from church for a very long time, but being in town does not go to church on three consecutive Sundays—three weeks—if he is a cleric let him be deposed, but if a layman let him be cut off.
Notes.
Ancient Epitome of Canon LXXX.
If anyone without the constraint of necessity leaves his church for three Lord's days, he shall be deprived of communion.
This is a renewal of canon xi. of Sardica (xiv. according to the numbering of Dionysius Exiguus.)
Nicene and Post-Nicene Fathers, Series II, Volume 14, ed. Philip Schaff and Henry Wace (1890–1900). Public domain. Text from the Christian Classics Ethereal Library.