arjuna uvācha
ayatiḥ śhraddhayopeto yogāch chalita-mānasaḥ
aprāpya yoga-sansiddhiṁ kāṅ gatiṁ kṛiṣhṇa gachchhati||37||

Meaning : Arjuna said:
O Krishna, what happens to one who, despite having sincere faith, abandons yoga because of a restless mind, and fails to attain perfection in yoga? What path do they follow?