From a section on Persian customs, somewhere in 130-135 of book one (which is as precise as my copy gets): “If an important decision is to be made, they discuss the question when they are drunk, and the following day the master of the house where the discussion was held submits their decision for reconsideration when they are sober. If they still approve it, it is adopted; if not, it is abandoned. Conversely, any decision they make when they are sober, is reconsidered afterwards when they are drunk.”
