Mahabharata 1.111.2

1.111.2

śuśrūṣuranahaṃvādī saṃyatātmā jitendriyaḥ |
svargaṃ gantuṃ parākrāntaḥ svena vīryeṇa bhārata || 2 ||

"Vaisampayana said, 'Pandu, possessed of great energy, then devoted himself to asceticism. Within a short time he became the favourite of the whole body of the Siddhas and Charanas residing there. And, O Bharata, devoted to the service of his spiritual masters, free from vanity, with mind under complete control and the passions fully subdued, the prince, becoming competent to enter heaven by his own energy, attained to great (ascetic) prowess. Some of the Rishis would call him brother, some friend, while others cherished him as their son. And, O bull of Bharata's race, having acquired after a long time great ascetic merit coupled with complete singleness, Pandu became even like a Brahmarshi (though he was a Kshatriya by birth).