In his next life he (Bharata) took birth in the family of a good brahmana & was known as Jadabharata because he always remained secluded & did not talk to anyone. & later on, he was discovered as the greatest transcendentalist by King Rahugana. BG 1972 p

Expressions researched:
"was known as Jaḍabharata because he always remained secluded and did not talk to anyone. And later on, he was discovered as the greatest transcendentalist by King Rahūgaṇa"

Bhagavad-gita As it is

BG Chapters 1 - 6

The Emperor, at an early age, retired for spiritual perfection but failed to achieve success. In his next life he took birth in the family of a good brāhmaṇa and was known as Jaḍabharata because he always remained secluded and did not talk to anyone. And later on, he was discovered as the greatest transcendentalist by King Rahūgaṇa. From his life it is understood that transcendental endeavors, or the practice of yoga, never go in vain. By the grace of the Lord the transcendentalist gets repeated opportunities for complete perfection in Kṛṣṇa consciousness.

BG 6.43 (1972), Translation and Purport

On taking such a birth, he again revives the divine consciousness of his previous life, and he tries to make further progress in order to achieve complete success, O son of Kuru.

King Bharata, who took his third birth in the family of a good brāhmaṇa, is an example of good birth for the revival of previous transcendental consciousness. King Bharata was the Emperor of the world, and since his time this planet is known among the demigods as Bhāratavarṣa. Formerly it was known as Ilāvartavarṣa. The Emperor, at an early age, retired for spiritual perfection but failed to achieve success. In his next life he took birth in the family of a good brāhmaṇa and was known as Jaḍabharata because he always remained secluded and did not talk to anyone. And later on, he was discovered as the greatest transcendentalist by King Rahūgaṇa. From his life it is understood that transcendental endeavors, or the practice of yoga, never go in vain. By the grace of the Lord the transcendentalist gets repeated opportunities for complete perfection in Kṛṣṇa consciousness.