A more thorough explanation:

A sublease is a type of lease agreement where the original tenant (lessee) rents out all or part of the property to a third party (sublessee) for a shorter period than the original lease term. The sublease creates a new contract between the lessee and the sublessee, with the lessee becoming the sublessor.

It's important to note that the property owner is not involved in the sublease agreement and has no direct relationship with the sublessee. The lessee remains responsible for fulfilling the obligations of the original lease agreement, even if they sublease the property.

While some landlords may prohibit subleasing, some jurisdictions have laws that allow tenants to sublease under certain conditions. For example, in New York City, tenants in buildings with four or more units are allowed to sublease regardless of any prohibition in the lease agreement.

John signed a lease agreement for a two-bedroom apartment for one year. After six months, he decides to sublease one of the bedrooms to his friend, Sarah, for the remaining six months of the lease term. John and Sarah sign a sublease agreement, which outlines the terms of their new contract. John is now the sublessor, and Sarah is the sublessee. However, John is still responsible for fulfilling the obligations of the original lease agreement with the landlord.