If the exchange of rupees is with rupees then dealing with difference is called interest. If there are rupees on one side and goods on the other side or any benefit, then the definition of interest does not apply to it. Hence, it is lawful to give the house or shop on rent definitely and there is no doubt of interest in it.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband