Verse 6.43

तत्र तं बुद्धिसंयोगं लभते पौर्वदेहिकम्। यतते च ततो भूयः संसिद्धौ कुरुनन्दन।।6.43।।

tatra taṁ buddhi-sanyogaṁ labhate paurva-dehikam yatate cha tato bhūyaḥ sansiddhau kuru-nandana

Meaning

Then, he's all, 'OMG, I remember this knowledge from my last life!' and goes full beast mode to become a total spiritual GOAT, Arjuna.

Commentary

Yo, so like, when this dude gets reincarnated, his past life's yoga skills and vibes aren't gone, they're totally leveled up. It's like, his brain still has all those past life memories and good habits, major brain power. It's all stored in his subconscious as "samskaras" or whatever, and it's all about to get activated. This is next level, he's gonna be way more into spiritual stuff than before, and he's gonna crush his goals.