Please suggest a remedy for the following case.
'A' is the license holder of a elephant. He purchased the elephant with due approval and he has got valid licence. 'A' is also having valid transit permission from the forest department to move the elephant from one place to another. Due to financial crisis, and to meet out his family emergency, 'A' has sold the elephant to 'B'. and executed one unregistered sale deed in 'B' s favour and also a gift deed. After purchasing the elephant 'B' has applied for transfer of license to the forest department by producing the unregistered Sale Deed. The forest officials rejected his application on the ground that prior approval for sale and purchase of elephant is not obtained. The forest Department also sent a showcause notice to 'A' to show under which permission 'A' has sold the elephant. After receipt of the notice, 'A' has sent a notice to 'B; stating that without the knowledge of the laws, He has sold the elephant and asked 'B' to return back the elephant. But 'B' refuses to take back his money and 'B' is not co-operating with 'A'. Now 'A' is willing to repay the sale consideration and take back the elephant. But 'B' is not willing. Please suggest me what case is to be filed against 'B' to recovery of elephant? Thank you in advance.