Mediation From Srimad Bhagavatam

SB 1.6.21: O Narada [the Lord spoke], I regret that during this lifetime you will not be able to see Me anymore. Those who are incomplete in service and who are not completely free from all material taints can hardly see Me

SB 1.6.26: Thus I began chanting the holy name and fame of the Lord by repeated recitation, ignoring all the formalities of the material world. Such chanting and remembering of the transcendental pastimes of the Lord are benedictory. So doing, I traveled all over the earth, fully satisfied, humble and unenvious.

SB 1.6.27: And so, O Brahmana Vyāsadeva, in due course of time I, who was fully absorbed in thinking of Krsna and who therefore had no attachments, being completely freed from all material taints, met with death, as lightning and illumination occur simultaneously.