Karva chauth is a festival celebrated by all married hindu women. They observe a fast for the long life of her husband. In keeping of karva chauth, a woman is to be grateful to her husband for providing her with food, shelter, clothing, respectability, comfort etc. But gurbani rejects such useless rituals. In Sikhi , men and women are equal. Sikhi teaches that the way to Waheguru (God) is to conquer the mind which is polluted by the 5 passions. By fasting and tormenting one’s body Waheguru (God) is not attained.
“One who discards this grain, is practicing hypocrisy. She is neither a happy soul-bride, nor a widow. Those who claim in this world that they live on milk alone, secretly eat whole loads of food. Without this grain, time does not pass in peace. Forsaking this grain, one does not meet the lord of the world. Says kabeer, this I know: blessed is that grain, which brings faith in the lord and master to the mind.”
“To practice forgiveness, good conduct and contentment is the true fast.”
(SGGS and 223)
Fasting, daily rituals, and austere self-discipline – those who keep the practice of these, are rewarded with less than a shell
Fasting is not approved, because in Sikhi, there is no place to dramas and other such stuff and according to our Guru Ji fasting and all such things are no good to anyone, as these get you nothing. The only way to attain God is by singing his name and following the true path shown in Sri Guru Granth Sahib Ji.
With all due respect to hinduism, their vedas tell them to do fasting and might be good for them, but our Guru Ji do not approve of this.