Second Council of Nicaea, Canon XVIII

That women ought not to live in bishops’ houses, nor in monasteries of men.

“Be ye without offence to those who are without,” says the divine Apostle.  Now for women to live in Bishops’ houses or in monasteries is ground for grave offence.  Whoever therefore is known to have a female slave or freewoman in the episcopal palace or in a monastery for the discharge of some service, let him be rebuked.  And if he still continue to retain her, let him be deposed.  If it happens that women are on the suburban estates, and the bishop or hegumenos desires to go thither, so long as the bishop or hegumenos is present, let no woman at that time continue her work, but let her betake herself to some other place until the bishop [or hegumenos^[542]] has departed, so that there be no occasion of complaint.

Source edition notes

[542] Not found in Bev.

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