Rights on mother's property after her death

My dad and mom owned a property in equal share. My mom died intestate, leaving behind my dad, mom and sister. Unaware of d rule position as many of us, we hired a lawyer and he split moms share between me and my sister, which we relinquished to our dad, and he is the sole owner now. The lawer said there is no share of the husband (that is my dad) contrary to the rule and we believed him. Is this in order ? We are Hindu by religion.