If you pay a certain amount to the owners and it helps to make them agree...

If you pay a certain amount to the owners and it helps to make them agree, then you can have such land.’ I then asked him (the Imam) about the case of a man who bought a piece of al-Kharaj land, then built in it or not except that tax payer people arrived therein, if he could receive the rent of houses from them if they pay taxes on their persons. He (the Imam) said, ‘He must stipulate it with them and after stipulation it is lawful.’”

وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (19/376))