Canon 1044

Can. 1044 §1. The following are irregular for the exercise of orders received:
1º a person who has received orders illegitimately while affected by an irregularity to receive them;
2º a person who has committed a delict mentioned in can. 1041, n. 2, if the delict is public;
3º a person who has committed a delict mentioned in can. 1041, nn. 3, 4, 5, 6.

Can. 1044 §2. The following are impeded from the exercise of orders:
1º a person who has received orders illegitimately while prevented by an impediment from receiving them;
2º a person who is affected by amentia or some other psychic illness mentioned in can. 1041, n. 1 until the ordinary, after consulting an expert, permits the exercise of the order.