I have send a message last night to my friend from BSNL network. It has not been delivered. It is showing Pending. Now I don't want that message which I have send to be delivered to my friend's cell. I want toundeliver it. Please help.Please fast

Check your outbox and delete it from there. If it's already made its way to the sent items, unless you're on an internal network, it's sent. If you're on an internal office network, depending on what e-mail/messaging system is used, you may be able to highlight the original message, right click, and choose "Unsend", but it's unlikely that it will work. Especially if it was a text message sent to his phone, or if his phone automatically downloads his e-mail.