Dear Jeyvenkat,
Although your query is not clear, for your information, please note that if CL is availed (in case of a credit balance) by any employee in a specific month, then it will be considered a paid day, and the said employee will be paid equivalent to a normal working day.
On the other hand, if an employee resigns from the services and CL is remaining in his/her Leave Account, then it will not be entitled to encashment. Only EL can be encashed at the time of FnF Settlement.
Please also note that CL/SL entitlement varies from state to state.
Hope you have received your reply. Cheers.