I sold my flate but buyer still not claimed for it

Sir I have taken token amt of 2lacs from buyer & did the registration for 31,25,000/- value for the same. As per buyer request the agreement made as follows 2lacs rtgs which I received, 2lacs post dated cheque & 2.25 lacs cash Which I haven't received for his loan purposes. For cash transactions of 2.25 lack I have received a mou on 100/- stamp paper that says that I haven't received the cash this is only for loan purposes. Now 60 days due date for sale already passed but the buyer still didn't get the loan approval now still he's asking me to wait. But I can't wait any more as my job is in merchant navy. I don't have anybody to trust & give them my power of attorney. Same time I have paid all banks installment with the token money now I don't have any money to repay him. Pls suggest me a way as I'm in big trouble.