《旧唐书·本纪·卷八》
假若请示而大王听从，这是大王参与危险的事；请示然而大王不听从，那我的计谋就失败了。
若请而从，是王与危事；请而不从，则吾计失矣。 
"If I ask for instruction and His Majesty agrees, then His Majesty will be involved in this dangerous matter; if I ask for instruction and His Majesty disagrees, then my plan will be ruined."