Unable to understand your requirement. If I am not wrong, you require a format of a relieving letter.
In general, once an employee has resigned and after serving the required notice period and completing the handing-over formalities, they should obtain a 'no dues' certificate from all concerned departments, such as their own department, stores, and accounts, and then approach HR for the relieving letter. HR will issue a relieving and service certificate. The relieving letter serves as proof for the outgoing employee that they have completed all the handing-over formalities and have no dues with the company. Additionally, the company will issue a service certificate as well. - kameswarao