A more thorough explanation:

Definition: Finesur done, grant et render is a legal term in Law French that means "fine upon gift, grant and render." It refers to a double conveyance consisting of a fine sur cognizance de droit, come ceo que il ad de son done and a fine sur concessit, used to convey particular limitations of estates. This was used to disentail an estate by acknowledging the cognizee's right in the land and then granting back to the cognizor or a third party some other estate in the land.

Example: An example of finesur done, grant et render would be if John owned a piece of land and wanted to convey a limited estate to Jane. John would acknowledge Jane's right to the land through a fine sur cognizance de droit, come ceo que il ad de son done. Then, John would grant back to himself or a third party some other estate in the land through a fine sur concessit.

Explanation: This legal term was used in medieval times to convey limited estates and disentail an estate. It involved a double conveyance consisting of two fines, one acknowledging the cognizee's right in the land and the other granting back some other estate in the land. This allowed for particular limitations of estates to be conveyed.