Canon 26
On those who married widows or divorcees, or were involved in the wicked devices.
If someone marry a widow or a divorcee, he shall not be admitted to the clergy, and if he surreptitiously got admitted, he shall be deposed. Similarly, if one was involved in the homicide - he did it, planned it, adviced it or allowed it to happen, after the baptism, and got surreptitiously to the clerical order, he shall be deposed and he shall receive communion only in the end of his life.
(trans. M. Szada)