What is testamentary succession?

Succession of the self acquired assets of the deceased as per his declaration is known as Testamentary succession.  The declaration of the deceased is called WILL, and the person (i.e. the deceased) is called Testator. The Indian succession Act, 1925 deals with the testamentary succession but applies to wills made after 1st January 1866 and not to wills made by Mohammadans.