the same property put under mortgage with other financial institution after the sale is complete of course , the sale is with consideration.
If the property was already sold by the owner to a buyer, then
the subsequent mortgage by the same owner is invalid and nothing an act with fraudulent intention to cheat the mortgagor for wrongful gains.
The provisions of law what you referred is clear about the position of the buyer, which is reproduced below for your reference.
[53. Fraudulent transfer.—
(1) Every transfer of immoveable property made with intent to defeat or delay the creditors of the transferor shall be voidable at the option of any creditor so defeated or delayed. Nothing in this sub-section shall impair the rights of a transferee in good faith and for consideration. Nothing in this sub-section shall affect any law for the time being in force relating to insolvency. A suit instituted by a creditor (which term includes a decree-holder whether he has or has not applied for execution of his decree) to avoid a transfer on the ground that it has been made with intent to defeat or delay the creditors of the transferor shall be instituted on behalf of, or for the benefit of, all the creditors.
Thus the creditor can initiate a suit for recovery on the above grounds.