The accused has been arrested and an investigation is underway, the police said.
A man in Rajasthan's Sri Ganganagar district allegedly killed his mother after she did not cook for him, the police said on Friday.
They said the incident occurred in Chunawadh village on Wednesday.
Krishna Kumar allegedly hit Bindra Kaur with a sharp object which led to her death, the police said, adding that the matter surfaced when his father reached home.
The accused has been arrested and an investigation is underway, the police said.