The Buddha illustrates that his true inheritance is the Dhamma, not material possessions. Venerable Sāriputta clarifies the practice of seclusion by listing numerous harmful qualities to abandon and the Middle Way that leads to abandoning of them, to clear vision, wisdom, tranquility, to full awakening.

In this case, friends, |anger::rage, wrath, fury, indignation [kodha]| is harmful, |resentment::bearing a grudge, harboring enmity [upanāha]| is harmful ... |contempt::ungratefulness, depreciation, denigration, disrespect, belittlement, disparagement [makkha]| is harmful, |feuding::quarreling, rivalry, opposition, struggle, conflict [paḷāsa]| is harmful, |jealousy::envy [issā]| is harmful, |stinginess::selfishness, meanness, tight-fistedness [macchera]| is harmful, |deceit::trick, illusion, hypocrisy [māya]| is harmful, |treachery::conning, deviousness, scamming [sāṭheyya]| is harmful, |stubbornness::bullheadedness, inflexibility [thambha]| is harmful, |aggressiveness::hostile or violent behavior towards living beings [sārambha]| is harmful, |conceit::self-view expressed as comparison—seeing oneself as superior, inferior, or equal; the persistent “I am” conceit (asmimāna) that underlies identification and fuels rebirth [māna]| is harmful, |arrogance::haughtiness, self-importance [atimāna]| is harmful, |vanity::indulgence, excess, pleasure, intoxication [mada]| is harmful, |negligence::carelessness, heedlessness [pamāda]| is harmful. There is a Middle Way for the abandoning of these harmful qualities, which produces clarity in vision, which produces wisdom, which leads to tranquility, to directly knowing, to full awakening, to Nibbāna. What, friends, is the Middle Way that produces clarity in vision, wisdom, and that leads to tranquility, directly knowing, full awakening, and Nibbāna? It is just this Noble Eightfold Path; that is, right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, right collectedness. This, friends, is the Middle Way that produces clarity in vision, wisdom, and that leads to tranquility, directly knowing, full awakening, and Nibbāna.”

The Buddha uses the simile of a defiled cloth to explain how the mind can be similarly defiled by various impurities, and how it can be purified by abandoning them. And it is through this very practice that one arrives at unshakeable faith in the Buddha, the Dhamma, and the Saṅgha. The Buddha also addresses a brahmin in verses who believes in purification by bathing in river.

Bhikkhus, having understood, ‘Craving and unbalanced greed is an impurity that defiles the mind,’ the bhikkhu abandons craving and unbalanced greed; having understood, ‘Ill will is an impurity that defiles the mind,’ he abandons ill will; having understood, ‘Anger is an impurity that defiles the mind,’ he abandons anger; having understood, ‘Resentment is an impurity that defiles the mind,’ he abandons resentment; having understood, ‘Contempt is an impurity that defiles the mind,’ he abandons contempt; having understood, ‘Feuding is an impurity that defiles the mind,’ he abandons feuding; having understood, ‘Jealousy is an impurity that defiles the mind,’ he abandons jealousy; having understood, ‘Stinginess is an impurity that defiles the mind,’ he abandons stinginess; having understood, ‘Deceit is an impurity that defiles the mind,‘ he abandons deceit; having understood, ‘Treachery is an impurity that defiles the mind,‘ he abandons treachery; having understood, ‘Stubbornness is an impurity that defiles the mind,‘ he abandons stubbornness; having understood, ‘Aggressiveness is an impurity that defiles the mind,‘ he abandons aggressiveness; having understood, ‘Conceit is an impurity that defiles the mind,‘ he abandons conceit; having understood, ‘Arrogance is an impurity that defiles the mind,‘ he abandons arrogance; having understood, ‘Vanity is an impurity that defiles the mind,‘ he abandons vanity; having understood, ‘Negligence is an impurity of the mind,‘ he abandons negligence.