Sanjay Singh (37) and his wife Mona Singh (35) were allegedly attacked with acid by Rajkumar and his wife Radha at Shabri Nagar yesterday.
The victims, who sustained severe burn injuries on their faces and hands, were admitted to Government Hamidia Hospital, Chhola Police station in-charge Mohan Sarwan said.
Following the incident, the accused were arrested and produced in a local court which remanded them in judicial custody.
Rajkumar had claimed that the house in which both the couples resided was owned by him and wanted to drive out tenant Sanjay and his family from there. However, he failed to produce proper documents to prove his claim, Sarwan said.
A case has been registered against the accused under section 326(A) (voluntarily causing grievous hurt by dangerous weapons or means) of IPC, police added.