p. 212
स चापि जातिस्मरणाप्तबोधस्तत्रैव जन्मन्यपवर्गमाप ॥
In plain words
And he too — the knowledge came to him through remembering his earlier births — reached apavarga, final release, in that very lifetime.
Close to the Sanskrit
And he too, his knowledge obtained through the recollection of (former) births, attained final release in that very birth.