what is money order commission?
entry?
 

Gunisha,
Money Order is a transfer facility available through post offices where a person can send and receive funds to nears and dears. Money sent through this is paid at the door step of the payee for which post office charges some service charges known as Money Order Commission. 
Accordingly, this would be treated as normal business expense and recorded by passing following entry:
$$\begin{gathered} Payee\text{'}s A/c Dr. \\ M.O. Commission A/c Dr. \\ To Cash A/c \end{gathered}$$

Assume that Money Order sent excludes commission.