After fourteen years Adomnán obtained this Law of God, and this is the cause. On Pentecost Eve, a holy angel of the Lord came to him, and again at Pentecost after a year, and seized a staff, and struck his side and said to him, “Go forth into Ireland, and make a law in it that women be not in any manner killed by men, through slaughter or any other death, either by poison, or in water, or in fire, or by any other beast, or in a pit, or by dogs, but that they shall die in their lawful bed. Thou shalt establish a law in Ireland and Britain for the sake of the mother of each one, because a mother has borne each one, and for the sake of Mary mother of Jesus Christ, through whom all are. Mary besought her Son on behalf of Adomnán about this Law. For whoever slays a woman shall be condemned to a twofold punishment: that is, his right hand and his left foot shall be cut off before death, and then he shall die, and his kindred shall pay seven full cumals and one-seventh part of the penance. If, instead of life and amputation, a fine has been imposed, the penance is fourteen years, and fourteen cumals shall be paid. But if a host has done it, every fifth man up to three hundred shall be condemned to that punishment; if few, they shall be divided into three parts. The first part of them shall be put to death by lot, hand and foot having been first cut off; the second part shall pay fourteen full cumals; the third shall be cast into exile beyond the sea, under the rule of a hard regimen; for the sin is great when any slays the mother and sister of Christ’s mother and the mother of Christ, and her who carries a spindle and who clothes every one. But he who from this day forward shall put a woman to death and does not do penance according to the Law, shall not only perish in eternity, and be cursed for God and Adomnán, but all shall be cursed that have heard it and do not curse him, and do not chastise him according to the judgement of this Law.”
— Cáin Adamnáin, xxxiii.