Amongst the three, Sattva from its untainted nature, from its being enlightening, and as it is free from misery, keeps the Self bound with the attachment of happiness and knowledge.
तत्र सत्त्वं निर्मलत्वात् प्रकाशकमनायम्। सुखसङ्गेन बध्नाति ज्ञानसङ्गेन चानघ॥