Hey @rupeshmandal, @Sooraj_JP
Clubbing provisions shall apply in case where husband transfers the asset to spouse without adequate considerations and if any income is earned on that asset then said income shall be clubbed under income tax act.
Here, in your case husband gives money to his wife for her personal expenses and wife invests the amount in stock which she later on earns some profits. Here, investment is considered out of the pin money and hence, clubbing provisions won’t apply.
As per Delhi Highcourt judgement in favour of R Dalmia Vs CIT (1982), pin money (i.e. an allowance given to the wife by her husband for her personal and usual household expenses) is not taxable. Further, if the asset is acquired by the spouse out of pin money then the income from such assets cannot be clubbed with the income of her husband.
Further, the liability to pay taxes on investments shall be on wife in this case.
Here you can read below clubbing provision article for more insights:
Hope, it helps! 