BG 6.43
तत्र तं बुद्धिसंयोगं लभते पौर्वदेहिकम्
यतते च ततो भूयः संसिद्धौ कुरुनन्दन
tatra taṃ buddhisaṃyogaṃ labhate paurvadehikam
yatate ca tato bhūyaḥ saṃsiddhau kurunandana
TRANSLATION
There he regains the disposition of mind which he had in his former body, O Arjuna, and from there he strives much more for success in Yoga.