I agree with Storm Crow. It's probably catnip. I buy catnip for my cats. It looks very much like dried and crumbled cannabis. It costs me $5 for an ounce, which is probably a lot, but hey, my cats like quality as well.

My guess is he wants to pack the bowl so you wouldn't be able to tell it isn't cannabis, which would be very hard once it is packed. Don't buy it.