Mother wants to gift her share to son

Father passed away without a Will.  Hence his self earned property will be divided between his legal heirs - widow(1/3), son(1/3) and daughter(1/3).  I am assuming that these three are the only legal heirs of the father.

Now, the mother can give away her share(1/3) to the son either during her lifetime and transfer the property in his name or she can make a Will, so that the property gets transferred to her son after her demise.  She can even execute a relinquishment deed in favour of the son.

Dear Namitha Agarwal,

    Thank you very much for you reply. I discussed your points with my friend and they want to go by WILL route without partition / without relinquishment deed. I have advised them to register it and make use of good lawyers so that he will not get any issue in future.

Thanks Again

Pradeep