According to the prosecution, accused Ramesh Mourya, a resident of Wadala area in Central Mumbai, was a compulsive drinker and quarrelled often with his wife Meena.
On June 30, 2013, Ramesh stabbed his wife as she refused to fill water. The incident came to light when his neighbours raised an alarm after they spotted him while taking Meena to hospital with blood all over the floor.
"We examined six witnesses. But it was the child's testimony which bolstered our case," said public prosecutor Shankar Yerende.
Yerende said that the child a was bit scared to depose in the court.
"However after he was comforted, he deposed before the court. The next problem was administering oath to him. The judge first asked him if he knows what is a lie and how one should only speak truth", Yerende said.
The prosecutor also said that the boy gave the sequence of events and said that Ramesh stabbed his mother with a kitchen knife.
Judge Sanjay Patil convicted Ramesh and sentenced him to life imprisonment.
