法苑珠林 45.20

45.20

又中阿含經云。禪以聲為刺。世尊亦說以聲為刺。所以者何。我實如是說禪有刺。持戒者以犯戒為刺。護諸根者以嚴飾身為刺。修習惡露者以淨相為刺。修習慈心者以恚為刺。離酒者以飲酒為刺。梵行者以見女色為刺。入初禪者以聲為刺。入第二禪者以覺觀為刺。入第三禪者以喜為刺。入第四禪者以入出息為刺。入空處者以色想為刺。入識處者以空處想為刺。入無所有處者以識處想為刺。入無想處者以無所有處想為刺。入想知滅定者以想知為刺。復有三刺。欲刺恚刺愚癡刺。此三刺者漏盡阿羅訶已斷已知。拔絕根本滅不復生。是為阿羅訶無刺（除此刺者是名納諫）。

Furthermore, the Madhyama-āgama says: "Dhyāna has sound as its thorn. The World-Honoured One also taught that sound is a thorn. Why is this? In truth, I teach that dhyāna has thorns: For one who upholds the precepts, violating the precepts is a thorn. For one who guards the sense faculties, adorning the body is a thorn. For one who cultivates [contemplation of] impurities, signs of purity are a thorn. For one who cultivates a mind of loving-kindness, anger is a thorn. For one who abstains from alcohol, drinking alcohol is a thorn. For one who practices brahma-conduct, seeing female form is a thorn. For one who enters the first dhyāna, sound is a thorn. For one who enters the second dhyāna, initial and sustained thought are thorns. For one who enters the third dhyāna, joy is a thorn. For one who enters the fourth dhyāna, inhalation and exhalation are thorns. For one who enters the sphere of infinite space, perception of form is a thorn. For one who enters the sphere of infinite consciousness, perception of the sphere of space is a thorn. For one who enters the sphere of nothingness, perception of the sphere of consciousness is a thorn. For one who enters the sphere of neither-perception-nor-non-perception, perception of the sphere of nothingness is a thorn. For one who enters the cessation of perception and sensation, perception and sensation are thorns. Furthermore, there are three thorns: the thorn of desire, the thorn of anger, and the thorn of delusion. These three thorns have already been severed and fully known by the arhat whose outflows are exhausted; having uprooted their foundation, they are extinguished and do not arise again. This is called the thornless arhat." (Removing these thorns is called accepting admonition.)