Babuji Kesarwani and his wife Gayatri stabbed Sunita after she spilt some water at their doorstep, they said.
Villagers who witnessed the incident dragged the couple to the police station, even as the mother of three girls succumbed to injuries in hospital, they said.
During interrogation, the couple confessed to their crime and said they had been suspecting the victim of practising black magic against them, they said. PTI NAC MNS
