In the question mentioned above, the opinion of your husband is not correct as per the Shariah perspective. Father and mother-in-laws have the status of parents. It is better for him to help them time and again. If they are poor and weak, he will be rewarded for the same. But, if your husband is not yet happy, you can help your parents with your personal money.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband