As I was reading from the Srimad Bhagavatam this morning about the passing of Bhīṣmadeva it was being described how “The perfect yogīs or mystics can leave the material body at their own sweet will at a suitable time and go to a suitable planet desired by them.” And how it is possiable to go beyond Saṁsāra, and go back to Godhead without any doubt.
…In the momentous hour of leaving his material body, Bhīṣmadeva set the glorious example concerning the important function of the human form of life. The subject matter which attracts the dying man becomes the beginning of his next life. Therefore, if one is absorbed in thoughts of the Supreme Lord Śrī Kṛṣṇa, he is sure to go back to Godhead without any doubt.
And what is Samsara?
Saṁsāra means material existence. That is called saṁsāra. Bhūtvā bhūtvā pralīyate (BG 8.19). You take your birth once in some form of body. You live for some time. Then you have to give up this body. Then you have to accept another body. Then again live for some time. Then give up that body. Again accept another body. In this way, it is going on. That is called saṁsāra, rotating within this material world. (Lecture on Gurvastakam at Upsala University by His Divine Grace -Stockholm, September 9, 1973)
The saṁsāra means repetition of different bodies. That is called saṁsāra. (Lecture on SB 1.2.4 -Rome, May 28, 1974)
Saṁsāra means this material entanglement. This is called saṁsāra.
(Lecture on CC Madhya-lila 25.40-50 – San Francisco, January 24, 1967)