Chapter 24, What the Manner of Excommunication Should Be
The degree of excommunication or punishment ought to be meted out according to the gravity of the offense, and to determine that is left to the judgment of the Abbot. If, however, anyone of the brethren is detected in smaller faults, let him be debarred from eating at the common table.
The following shall be the practice respecting one who is excluded from the common table: that he does not intone a psalm or an antiphon nor read a lesson in the oratory until he hath made satisfaction; let him take his meal alone, after the refection of the brethren; thus: if, for instance, the brethren take their meal at the sixth hour that brother will take his at the ninth, and if the brethren take theirs at the ninth, he will take his in the evening, until by due satisfaction he obtaineth pardon.
Chapter 25, Of Graver Faults
But let the brother who is found guilty of a graver fault be excluded from both the table and the oratory. Let none of the brethren join his company or speak with him. Let him be alone at the work enjoined on him, persevering in penitential sorrow, mindful of the terrible sentence of the Apostle who saith, that "such a man is delivered over for the destruction of the flesh, that the spirit may be saved in the day of the Lord" (1 Cor 5:5). Let him get his food alone in such quantity and at such a time as the Abbot shall deem fit; and let him not be blessed by anyone passing by, nor the food that is given him.
Chapter 26, Of Those Who without the Command of the Abbot Associate with the Excommunicated
If any brother presume to associate with an excommunicated brother in any way, or to speak with him, or to send him a message, without the command of the Abbot, let him incur the same penalty of excommunication.
Chapter 27, How Concerned the Abbot Should Be about the Excommunicated
Let the Abbot show all care and concern towards offending brethren because "they that are in health need not a physician, but they that are sick" (Mt 9:12). Therefore, like a prudent physician he ought to use every opportunity to send consolers, namely, discreet elderly brethren, to console the wavering brother, as it were, in secret, and induce him to make humble satisfaction; and let them cheer him up "lest he be swallowed up with overmuch sorrow" (2 Cor 2:7); but, as the same Apostle saith, "confirm your charity towards him" (2 Cor 2:8); and let prayer be said for him by all.
The Abbot must take the utmost pains, and strive with all prudence and zeal, that none of the flock entrusted to him perish. For the Abbot must know that he has taken upon himself the care of infirm souls, not a despotism over the strong; and let him fear the threat of the Prophet wherein the Lord saith: "What ye saw to be fat, that ye took to yourselves, and what was diseased you threw away" (Ezek 34:3-4). And let him follow the loving example of the Good Shepherd, who, leaving the ninety-nine sheep on the mountains, went to seek the one that had gone astray, on whose weakness He had such pity, that He was pleased to lay it on His sacred shoulders and thus carry it back to the fold (cf Lk 15:5).
Chapter 28, Of Those Who Having Often Been Corrected Do Not Amend
If a brother hath often been corrected and hath even been excommunicated for a fault and doth not amend, let a more severe correction be applied to him, namely, proceed against him with corporal punishment.
But if even then he doth not reform, or puffed up with pride, should perhaps, which God forbid, even defend his actions, then let the Abbot act like a prudent physician. After he hath applied soothing lotions, ointments of admonitions, medicaments of the Holy Scriptures, and if, as a last resource, he hath employed the caustic of excommunication and the blows of the lash, and seeth that even then his pains are of no avail, let him apply for that brother also what is more potent than all these measures: his own prayer and that of the brethren, that the Lord who is all-powerful may work a cure in that brother.
But if he is not healed even in this way, then finally let the Abbot dismiss him from the community, as the Apostle saith: "Put away the evil one from among you" (1 Cor 5:13); and again: "If the faithless depart, let him depart" (1 Cor 7:15); lest one diseased sheep infect the whole flock.
Chapter 29, Whether Brethren Who Leave the Monastery Ought to Be Received Again
If a brother, who through his own fault leaveth the monastery or is expelled, desireth to return, let him first promise full amendment of the fault for which he left; and thus let him be received in the last place, that by this means his humility may be tried. If he should leave again, let him be received even a third time, knowing that after this every means of return will be denied him.