My grandfather gifted his ancestral property to my father, who is now 72 years old. He’s recently started talking about giving the property to someone outside the family. What rights do my mother, my brother, and my nephew have to prevent this and keep the property within our family?

Under Indian law, your father has the right to dispose of his property as he wishes, even if it was gifted to him. Your mother, brother, and nephew have no legal right to prevent the transfer. However, they might explore options like a family settlement or challenging the transfer based on undue influence, if applicable.