Hilary's practice of using armed violence must be suppressed
A band of soldiers, as we have learned, follows the priest through the provinces and helps him who relies upon their armed support in turbulently invading churches, which have lost their own priests. Before this court are dragged for ordination men who are quite unknown to the cities over which they are to be set. For as one who is well known and approved is sought out in peace, so must one who is unknown, when brought forward, be established by violence. I beg and entreat and beseech you in God's name prevent such things, brethren, and remove all occasion for discord from your provinces.
At all events we acquit ourselves before God in beseeching you not to allow this to proceed further. In peace and quietness should they be asked for who are to be priests. The consent of the clergy, the testimony of those held in honour, the approval of the orders and the laity should be required. He who is to govern all, should be chosen by all. As we said before, each metropolitan should keep in his own hands the ordinations that occur in his own province, acting in concert with those who precede the rest in seniority of priesthood, a privilege restored to him through us.
No man should claim for himself another's rights. Each should keep within his own limits and boundaries, and should understand that he cannot pass on to another a privilege that belongs to himself. But if any one neglecting the Apostle's prohibitions and paying too much heed to personal favour, wishes to give up his precedence, thinking he can pass his rights on to another, not he to whom he has yielded, but he who ranks before the rest of the priests within the province in episcopal seniority, should claim to himself the power of ordaining.
The ordination should be performed not at random but on the proper day: and it should be known that any one who has not been ordained on the evening of Saturday, which precedes the dawn of the first day of the week, or actually on the Lord's day cannot be sure of his status. For our forefathers judged the day of the Lord's resurrection as alone worthy of the honour of being the occasion on which those who are to be made priests are given to God.
Source: Letters (New Advent)