Canonum De Lex Ecclesium
Canons of Ecclesiastical Law
VI. Institution
6.3 Administration
Article 196 - Punishment
Canon 4619 (link)
A valid punishment is any non-lethal, non violent, non-torture penalty issued in accordance with these canons and the sacred covenant Pactum de Singularis Caelum.
Canon 4620 (link)
A punishment that is not in accordance with these canons and the sacred covenant Pactum de Singularis Caelum is not valid and therefore is null and void, having no legitimate force of law.