§ 159
The tenant is liable for damages caused by persons who, under the provisions of § 157 and § 158, use the rented property through negligent conduct.
Stk. 2.The tenant is responsible to the landlord for ensuring that the persons mentioned in subsection 1 comply with the rules that ensure good order and proper use of the rented property.
Stk. 3.The tenant is also liable for damages under § 142, subsection 3, for damage caused by installations made by the persons mentioned in subsection 1 in the rented property.