FD on parents name confusion on clubbing provision

Dear Sir/Mam,

I have gone through various online articles regarding saving tax by investing on parent's name.

If I just online transfer post tax savings to my parent's account on monthly or quarterly basis and invest on their name, some article says that interest received would not be in taxable in son's hands and some says clubbing rule will be applied.

For e.g. in following article, author who is a qualified CA says that clubbing would not be applied. 

https://www.charteredclub.com/tax-fd-mother-father/

Please let me know what is the fact. Also what are the penalties when clubbing is applicable but not shown in ITR.  

Thanks