The incident occurred a couple of days ago after Sabina, (45), asked her husband Alimuddin for money for paying house rent to the landlord and he refused, said a senior police officer.
Alimuddin lost his temper during the argument and poured kerosene over her and then lit a matchstick to set her ablaze, he added.
The couple's two kids were at home and they raised an alarm and also doused the flames, police said.
The victim was rushed to hospital and later she was referred to Safdarjung Hospital where she is recuperating, they added.
Alimuddin, who works as a labourer, has been arrested, police said.
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