hi,

This will not a wise decision to leave a job before confirming for a new position. every organization has some rules and employee have to maintain this.

some of the organization has year of bond rules, if you leave the job before the bond period you have to return  the bond money to the organization as a compensation. also employee have to inform the organization before a certain period before leaving the company.

so it would be best to discuss this with the organization head/ HR or go through again the joining description of the work position  you are currently having to clarify the rules.