In the Śrīmad-Bhāgavatam also the definition of liberation is given. Muktir hitvānyathā-rūpaṁ svarūpeṇa vyavasthitiḥ: (SB 2.10.6) mukti means liberation from the contaminated consciousness of this material world and situation in pure consciousness. All the instructions of Bhagavad-gītā are intended to awaken this pure consciousness, and therefore we find at the last stage of the Gītā's instructions that Kṛṣṇa is asking Arjuna whether he is now in purified consciousness. Purified consciousness means acting in accordance with the instructions of the Lord. This is the whole sum and substance of purified consciousness.