Neighbours rushed the couple to a hospital and their condition was said to be critical, police said.
Ramgopal and his wife Manju had a quarrel on Monday night.
After the quarrel, he went inside the kitchen, brought a knife and repeatedly stabbed his wife, police said.
The police were informed and they were rushed to a hospital.
Ramgopal is a milk vendor. His family members have told police that he often had fights with his wife. The couple has three children.