Read the following scenario and answer the question that follows: 

Mr Venter and Mr Khumalo have been neighbours for some time. However, Mr Venter recently installed a gutter system that causes water to flow right into Mr Khumalo’s property, damaging his plants. This is a nuisance to Mr Khumalo and makes life very unpleasant for him, as he is an avid gardener. 

In private law Mr Khumalo has a right to property. What is the object of Mr Khumalo’s right to property called?