How did Amitabh Bachchan repurchase ₹150-crore 'Jalsa', which he first got as salary?

Amitabh Bachchan's residence 'Jalsa', reportedly worth ₹150 crore, received the bungalow, then called Mansa, from producer NC Sippy as remuneration for 1982 film 'Satte Pe Satta'. The actor initially sold the 10,000-sq ft bungalow but repurchased it at higher price at his wife Jaya Bachchan's advice. He later renamed it and transferred its ownership to Jaya via a gift deed.