72
Śrīmad-Bhāgavatam
[Canto 6, Ch. 1]
to transmigrate from one body to another in human life, animal life and life as a demigod. When the living entity gets the body of a demigod, he is certainly very jubilant, when he gets a human body he is always in lamentation, and when he gets the body of an animal, he is always afraid. In all conditions, however, he is actually miserable. His miserable condition is called  saṁsṛti , or transmigration in material life.
PURPORT
The sum and substance of material conditional life is explained in this verse. The living entity, the seventeenth element, is struggling alone, life after life. This struggle is called  saṁsṛti , or material conditional life. In  Bhagavad-gītā  it is said that the force of material nature is insurmountably strong ( daivī hy eṣā guṇamayī mama māyā duratyayā ). Material nature harasses the living entity in different bodies, but if the living entity surrenders to the Supreme Personality of Godhead, he becomes free from this entanglement, as confirmed in  Bhagavad-gītā  ( mām eva ye prapadyante māyām etāṁ taranti te ). Thus his life becomes successful.
TEXT 52
देहलोऽजितपद्रगों नेच्छन् कर्माणि कार्यते । कोशकार इवात्मानं कर्मणाच्छाद्य मुह्यति ॥५२॥
dehy ajño 'jita-ṣaḍ-vargo necchan karmāṇi kāryate kośakāra ivātmānaṁ karmaṇācchādya muhyati
dehī —the embodied soul;  ajñaḥ —without perfect knowledge;  ajita-ṣaṭ-vargaḥ —who has not controlled the senses of perception and the mind;  na icchan —without desiring;  karmāṇi —activities for material benefit;  kāryate —is caused to perform;  kośakāraḥ —the silkworm;  iva —like;  ātmānam —himself;  karmaṇā —by fruitive activities;  ācchādya —covering;  muhyati —becomes bewildered.