A more thorough explanation:

VASSALLO FACIENDO SUPERIORI QUOD DE JURE FACERE OPORTET

Vassallo faciendo superiori quod de jure facere oportet is a Latin term used in law. It means that the vassal must perform their duties to their superior according to the law.

An example of vassallo faciendo superiori quod de jure facere oportet is when a tenant pays rent to their landlord. The tenant is obligated to pay rent to their landlord according to the law, and the landlord is obligated to provide a safe and habitable living space for the tenant.

Another example is when an employee follows the rules and regulations set by their employer. The employee is obligated to follow the rules and regulations set by their employer according to the law, and the employer is obligated to provide a safe and fair working environment for the employee.

These examples illustrate the concept of vassallo faciendo superiori quod de jure facere oportet because they show how both parties have obligations to each other according to the law. The vassal (tenant or employee) must perform their duties to their superior (landlord or employer) according to the law, and the superior must provide a safe and fair environment for the vassal.