Canon CXXVI.
Canons of Local Councils Received in Trullo (Sardica, Carthage) · The Seven Holy Ecumenical Councils
Item, it seemed good that whatever bishop, by the necessity of the dangers of virginal purity, when either a powerful suitor or some ravisher is feared, or if she shall be pricked with some scruple of death that she might die unveiled, at the demand either of her parents or of those to whose care she has been entrusted, shall give the veil to a virgin, or shall have given it while she was under twenty-five years of age, the council which has appointed that number of years shall not oppose him.
LocalT 2.130.3
Whosoever has veiled or shall veil a virgin before she is twenty-five years of age (that is give her the habit, or clothe her), being forced thereto on account of a powerful lover, or a ravisher, or deadly disease, provided those who have the charge of her so exhort, shall receive no damage from the synod concerning that age.
LocalT 2.130.6