Bhagavad Gita 6.43

Then, the experience acquired in his former life will revive, and with it, he will more eagerly strive for perfection than before.

तत्र तं बुद्धिसंयोगं लभते पौर्वदेहिकम्।
यतते च ततो भूयः संसिद्धौ कुरुनन्दन॥

tatra taṃ buddhisaṃyogaṃ labhate paurvadehikam|
yatate ca tato bhūyaḥ saṃsiddhau kurunandana||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).