If a project is RERA registered then does it mean the title is clear

1. ⁠If parents gift a land and money to their daughter, can her husband claim later on in any circumstance? 2. If she explicitly makes a will passing everything to her sibling, can it be contested by the husband later?

my wife's grandfather bought land on name of my father in law. My father in law died before my wife's grand father without will. after that my mother in law also died. my wife was minor at that time. Her Grand father sell this property without any intimation and now her grand father also died. What we will have right to get this property

1. Pune, buying agriculture land for bungalow construction is legal? , what fees to be paid and to whom.