When a king’s frontier citadel is well provided with seven essentials and gets four kinds of sustenance when needed, without trouble or difficulty, it is then called a king’s frontier citadel that cannot be overrun by external foes and enemies. In the same way, when a noble disciple has seven good qualities, and they get the four absorptions—blissful meditations in this life that belong to the higher mind—when they want, without trouble or difficulty, they are then called a noble disciple who cannot be overrun by Māra, who cannot be overrun by the Wicked One. What are the seven good qualities that they possess?

Just as a king’s frontier citadel has a pillar with deep foundations, firmly embedded, imperturbable and unshakable, to defend those within and repel those outside, in the same way a noble disciple has faith in the Realized One’s awakening: ‘That Blessed One is perfected, a fully awakened Buddha, accomplished in knowledge and conduct, holy, knower of the world, supreme guide for those fit for training, teacher of gods and humans, awakened, blessed.’ A noble disciple with faith as their pillar gives up the unskillful and develops the skillful, they give up the blameworthy and develop the blameless, and they keep themselves pure. This is the first good quality they have.

Just as a citadel has a moat that is deep and wide, in the same way a noble disciple has a conscience. They’re conscientious about bad conduct by way of body, speech, and mind, and conscientious about having any bad, unskillful qualities. A noble disciple with a conscience as their moat gives up the unskillful and develops the skillful, they give up the blameworthy and develop the blameless, and they keep themselves pure. This is the second good quality they have.