Bede the Venerable
Catena Aurea · Lukasevangelium 2
And when the days of her purification according to the law of Moses were accomplished, they brought him to Jerusalem, to present him to the Lord; (As it is written in the law of the Lord, Every male that openeth the womb shall be called holy to the Lord;) 24 And to offer a sacrifice according to that which is said in the law of the Lord, A pair of turtledoves, or two young pigeons. And, behold, there was a man in Jerusalem, whose name was Simeon; and the same man was just and devout, waiting for the consolation of Israel; and the Holy Ghost was upon him.
If you diligently examine the words of the law, you will find indeed that the mother of God as she is free from all connexion with man, so is she exempt from any obligation of the law. For not every woman who brings forth, but she who has received seed and brought forth, is pronounced unclean, and by the ordinances of the law is taught that she must be cleansed, in order to distinguish probably from her who though a virgin has conceived and brought forth. But that we might be loosed from the bonds of the law, as did Christ, so also Mary submitted herself of her own will to the law.