A more thorough explanation:

DE CLERICO INFRA SACROS ORDINES CONSTITUTO, NON ELIGENDO IN OFFICIUM

De clerico infra sacros ordines constituto, non eligendo in officium is a Latin term used in law. It means "for not electing a clerk in holy orders to office". It refers to a writ that orders the release of a cleric from secular office. The writ is addressed to the bailiff or other person who had forced a cleric to take a bailiwick or other secular office.

An example of this term in use would be if a bishop was forced to take on a secular office, such as a judge, and was unable to fulfill his duties as a bishop. The writ of de clerico infra sacros ordines constituto, non eligendo in officium would be used to release him from his secular duties so he could return to his religious duties.

Another example would be if a priest was forced to take on the role of a sheriff and was unable to perform his religious duties. The writ would be used to release him from his secular duties so he could return to his religious duties.

These examples illustrate how the writ of de clerico infra sacros ordines constituto, non eligendo in officium was used to protect the religious duties of clerics and ensure they were not forced to neglect their religious duties for secular ones.