The couple already have two girls and gave away their third child, also a girl born on December 27, to the childless couple on January 3 for a sum of Rs 25,000, police said.
The matter came to light yesterday after which the infant was handed over to officials of the Integrated Child Development Services (ICDS) scheme, police added.
"The husband works in a factory making plastic chairs while the wife works in a hotel. We have booked them as well as the childless couple that received the baby and a mediator under the Juvenile Justice (Care and Protection of Children) Act," the official informed.