Connecting Vanity drain assembly to Unthreaded Metallic Drain Pipe...

Hi,
This is one of the times I could kick myself…. I wish I had taken pictures of the old vanity and connections before I threw them out, so now I had a way to put things back together!
The picture I have attached should show it all. I have inserted a 1 1/2" slip joint...
Connecting Vanity drain assembly to Unthreaded Metallic Drain Pipe...