I got 221(g) pink slip for L1B , the slip issued by VO has two sides,Which side need to consider?

I got 221(g) pink slip for L1B , the slip issued by VO has two sides, the side where he has written case number says that, ChennaiAdmin will send me an email for additional documents, whereas other side it has printed to send Resume, Travel history, Publication, Research Details, Funding information and Invitation to ChennaiAdmin email. I am not sure whether to wait for email or to send those documents?