尼羯磨 3.107

3.107

爾時佛告諸比丘：「譬如有驢與群牛共行，自言：『我亦是牛！我亦是牛！』而驢毛不似牛，脚不似牛，音聲亦不似牛，而與牛共行，自言是牛。如是有癡人隨逐如法比丘，自言是比丘。此癡人無有增戒、增心、增慧如善比丘，與眾僧共行，自言：『我是比丘！』是故汝等當勤修習增戒、增心、增慧學。」佛說如是，諸比丘聞，歡喜信樂受持。

At that time the Buddha addressed the monks: "Suppose a donkey walks along with a herd of cows and says to itself: 'I too am a cow! I too am a cow!' Yet the donkey's hair does not resemble a cow's, its legs do not resemble a cow's, and its sound does not resemble a cow's; yet walking along with the cows, it says of itself that it is a cow. In this way, there is a foolish person who follows after monks who are in accordance with the Dharma, saying of himself that he is a monk. This foolish person lacks higher morality, higher mind, and higher wisdom like a good monk, yet walking along with the saṃgha, he says of himself: 'I am a monk!' Therefore, you all should diligently cultivate the training in higher morality, higher mind, and higher wisdom." The Buddha having spoken thus, the monks heard it and joyfully received and upheld it in faith.