Can i CO if it says this

The pattern i am following for slippers says “thread remainder of yarn through stitches like a drawstring” but doesnt say anything about casting off. I am assuming once the “yarn” is through the stitches i can just pull the needle out?

Probably after drawing the yarn through the remaining stitches you are going to tighten them up and weave in the end. (sounds like the instructions for ending a hat.) Bdinging off shouldn’t be necessary.

thats right, no casting off at this point. pulling the yarn through the stitches (and taking out the neeedle) then pulling tight secures things well, especially if you then weave in the tail of the yarn.