雲門匡真禪師廣錄 2.223

2.223

示眾云：「劄即難七九六十三，作麼生道？」代云：「不可總無人去也。」又云：「洎合向後道。」

Instructing the assembly, he said, "Look! It is difficult: seven times nine is sixty-three. How do you speak?" Answering on their behalf, he said, "It cannot be that there is no one at all." He also said, "It almost ought to be spoken toward the back."