HUF clubbing provisions

It is well understood that if a HUF member transfers assets to a HUF, then the income from those assets is taxable in the hands of the transferror. However, many websites that 'income from income' is not taxable in the hands of the transferror. Please see find those below. But I am not able to find this in the bare act. So wanted to ask if the taxability of 'income on income' in the hands of the transferee/HUF is correct, and if so, from where is such a provision derived if it is not in the bare acts. https://cleartax.in/s/section-64-clubbing-income says "The clubbing provisions will not apply on the income derived from the clubbed income" https://www.taxbuddy.com/blog/section-64-clubbing-income says "Income from clubbed income: Any additional income from the income created will not be clubbed, unless the asset is passed to a spouse or daughter-in-law (the son's wife), in the case of a minor." https://www.bankbazaar.com/tax/what-are-income-clubbing-provisions-and-tax-implications.html says "Interest on Interest:In case you earn a lot of money while your Spouse has zero income, you can benefit from investments made in his/her name. The interest earned from the investment will be clubbed with your income and taxed accordingly. However, if your spouse re-invests the income and earns income from this investment, it will be taxed on him/her only as per respective tax brackets."