तत्र सत्त्वं निर्मलत्वात्प्रकाशकमनामयम्। सुखसङ्गेन बध्नाति ज्ञानसङ्गेन चानघ ॥

tatra sattvaṁ nirmalatvāt prakāśhakam anāmayam sukha-saṅgena badhnāti jñāna-saṅgena chānagha

Of these Harmony from its stainlessness, luminous and healthy, bindeth by the attachment to bliss and the attachment to wisdom, O sinless one.

In plain words: Krishna says goodness is pure, bright, and healthy. But even goodness ties a person down, by making them attached to happiness and to knowing things.