As I have advised you, My dear sons, you should act accordingly. Be very careful. By these means you will be freed from the ignorance of the desire for fruitive activity, and the knot of bondage in the heart will be completely severed. For further advancement, you should also give up the means. That is, you should not become attached to the process of liberation itself.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
कर्माशयं हृदयग्रन्थिबन्ध- मविद्ययासादितमप्रमत्तः । अनेन योगेन यथोपदेशं सम्यग्व्यपोह्योपरमेत योगात्
karmāśayaṃ hṛdayagranthibandha- mavidyayāsāditamapramattaḥ | anena yogena yathopadeśaṃ samyagvyapohyoparameta yogāt
SB 5.5.14