Ekottaragama (Sanskrit fragments) 12.1.7

12.1.7

「云何思惟四意止？於是，比丘內自觀身，除去惡念，無有愁憂；外自觀身，除去惡念，無有愁憂；內外觀身，除去惡念，無有愁憂。內觀痛痛而自娛樂，外觀痛痛，內外觀痛痛；內觀心而自娛樂，外觀心，內外觀心；內觀法，外觀法，內外觀法而自娛樂。

“How does one contemplate the four abodes of mindfulness? Here, a monk turns away bad thoughts and has no grief by contemplating the internal body. He turns away bad thoughts and has no grief by contemplating external bodies. He turns away bad thoughts and has no grief by contemplating internal and external bodies. He contemplates internal feelings as feelings and enjoys himself. He contemplates external feelings as feelings … He contemplates internal and external feelings as feelings … He contemplates internal mind and enjoys himself. He contemplates external mind … He contemplates internal and external mind … He contemplates internal principles … He contemplates external principles … He contemplates internal and external principles and enjoys himself.