Hi Allan!It's difficult when you ask for the words exactly as sung by a particular singer(s), especially when it's from a recording made in the 1960s. As it happens, I have the LP you ask about but it's in storage and some miles away.
My guess on this is that the words you're looking for are "before I'll lay one night with you at either stock or wall."
My recollection is that Ian and Sylvia sing this very fast making your job harder. These words should work for you however.
All the best, Dan Milner