As you are looking for information about required documents on the time of joining at Madhya Bihar Gramin Bank for the post of Clerk, so you need following documents:

Acknowledgement
Indemnity Bond
Joining Application
Identity Form
Declaration of Marital Status
Declaration of Fidelity and Secrecy
Declaration Of Domicile
Reference Form
Conduct and performance
Medical Report
Attestation form
FORM_11-WITH-INSTRUCTION

You can download all these documents on website of Bank. You should follow these steps:

Go on homepage of official website of Madhya Bihar Gramin Bank.

The Career link is located in top middle side of homepage.

Click on it and reach on a new page that looks like following image:



You can download all documents on this page.

Madhya Bihar Gramin Bank Acknowledgement



Madhya Bihar Gramin Bank Joining Application