What are contaminated phenomena? The various schools of thought, Sarvāstivāda, Sautrantika, Cittamatra, and so forth, give different interpretations of what is contaminated and what is not contaminated. In Abhidharmakosa, this difference is explained at length. From the standpoint of Mahayana Buddhism, everything that is impure is contaminated – this includes all kinds of attachment and object of attachment; everything that is pure is not contaminated – this includes the absence of any attachment and object of attachment, a state attained by bodhisattvas from the first stage up when abiding in the truth of reality.

~Depicted from THE FOUR SEALS OF DHARMA - All Contaminated Things are Unsatisfactory