Property recd thro' will can be called ancestral?

Property that you get from your father is self acquired property in your hands (provided there is no contrary scheme in the will) and you are free to dispose it off by will/gift or otherwise. However if after getting property via will - a child is born to you - the property automatically becomes ancestral in the hands of that child. meaning thereby he will form a coparcenory with you and hold it in equal measures. 

Thankyou Mr. Bharat, for your reply. But, I fail to understand that - If I can dispose the property (recd thro' father's Will) by means of MY WILL to anyone, then how a newly born child can carry any right, if I dont give him any right in MY WILL?

Thanks in advance.