The Gateless Gate, by Ekai, called Mu-mon, tr. Nyogen Senzaki and Paul Reps , at sacred-texts.com
Ananda asked Kashapa: "Buddha gave you the golden-woven robe of successorship. What else did he give you?"
Kashapa said: "Ananda."
Ananda answered: "Yes, brother."
Said Kashapa: "Now you can take down my preaching sign and put up your own."
Mumon's comment: If one understands this, he will see the old brotherhood still gathering, but if not, even though he has studied the truth from ages before the Buddhas, he will not attain enlightenment.