Clubbing in husband's income to the ratio of his asset and no clubbing in brothers income.
Don't show it as transfer show it as land given on zero rent by signing a consent letter by husband.
Yes gift from wife will be clubbed in the proportion of gift to other asset of business and no clubbing for brothers gift.
That's how income tax act is made we need to club spouse gift.
No clubbing if gift from sister.
Hope you find the information helpful if you do please rate it 5 and provide your valuable feedback for my improvement.
Thank you