As stated in Śrīmad-Bhāgavatam (SB 10.14.58):
- samāśritā ye pada-pallava-plavaṁ
- mahat-padaṁ puṇya-yaśo murāreḥ
- bhavāmbudhir vatsa-padaṁ paraṁ padaṁ
- padaṁ padaṁ yad vipadāṁ na teṣām
"For one who has accepted the boat of the lotus feet of the Lord, who is the shelter of the cosmic manifestation and is famous as Murāri, or the enemy of the Mura demon, the ocean of the material world is like the water contained in a calf's hoofprint. His goal is paraṁ padam, or Vaikuṇṭha, the place where there are no material miseries, not the place where there is danger at every step."
One who seeks shelter at the lotus feet of Lord Kṛṣṇa is immediately protected by the Lord. As the Lord promises in Bhagavad-gītā (BG 18.66), ahaṁ tvāṁ sarva-pāpebhyo mokṣayiṣyāmi mā śucaḥ: "I shall deliver you from all sinful reactions. Do not fear." By taking shelter of Lord Kṛṣṇa, one comes under the safest protection. Thus when the Pāṇḍavas took shelter at the lotus feet of Kṛṣṇa, all of them were on the safe side of the Battlefield of Kurukṣetra. Parīkṣit Mahārāja, therefore, felt obliged to think of Kṛṣṇa in the last days of his life. This is the ideal result of Kṛṣṇa consciousness: ante nārāyaṇa-smṛtiḥ (SB 2.1.6). If at the time of death one can remember Kṛṣṇa, one's life is successful. Parīkṣit Mahārāja, therefore, because of his many obligations to Kṛṣṇa, intelligently decided to think of Kṛṣṇa constantly during the last days of his life. Kṛṣṇa had saved the Pāṇḍavas, Mahārāja Parīkṣit's grandfathers, on the Battlefield of Kurukṣetra, and Kṛṣṇa had saved Mahārāja Parīkṣit himself when he was attacked by the brahmāstra of Aśvatthāmā. Kṛṣṇa acted as the friend and worshipable Deity of the Pāṇḍava family. Moreover, apart from Lord Kṛṣṇa's personal contact with the Pāṇḍavas, Kṛṣṇa is the Supersoul of all living entities, and He gives everyone liberation, even if one is not a pure devotee. Kaṁsa, for example, was not at all a devotee, yet Kṛṣṇa, after killing him, gave him salvation. Kṛṣṇa consciousness is beneficial to everyone, whether one is a pure devotee or a nondevotee. This is the glory of Kṛṣṇa consciousness. Considering this, who will not take shelter at the lotus feet of Kṛṣṇa? Kṛṣṇa is described in this verse as māyā-manuṣya because He descends exactly like a human being. He is not obliged to come here, like karmīs, or ordinary living beings; rather, He appears by His own internal energy (sambhavāmy ātma-māyayā (BG 4.6)) just to show favor to the fallen conditioned souls. Kṛṣṇa is always situated in His original position as sac-cid-ānanda-vigraha (BS 5.1), and anyone who renders service to Him is also situated in his original, spiritual identity (svarūpeṇa vyavasthitiḥ (SB 2.10.6)). This is the highest perfection of human life.