Mbh 12.26.1a

"Vaisampayana said, 'In this connection, the high-souled Yudhishthira said unto Arjuna these words fraught with reason. "Thou thinkest, O Partha, that there is nothing superior to wealth, and that the poor man can neither have heaven, nor happiness, nor the acquisition of his wishes. This, however, is not true. Many persons are seen that have been crowned with success through sacrifice in the shape of Vedic study. Many sages are seen by devotion to penances to have acquired eternal regions of bliss. They, O Dhananjaya, who always observe the practices of the Rishis by betaking themselves to Brahmacharya and who become acquainted with all duties, are regarded by the gods as Brahmanas. O Dhananjaya, thou shouldst always regard those Rishis that are devoted to the study of the Vedas and those that are devoted to the pursuit of true knowledge as persons that are truly virtuous. O son of Pandu, all our acts depend upon those that are devoted to the acquisition of true knowledge.[76] We know this to be the opinion of the Vaikhanasas, O puissant one! The Ajas, the Prishnis, the Sikatas, O Bharata, the Arunas, and the Kitavas, have all gone to heaven through the merit of Vedic study. By performing those acts, O Dhananjaya, that are indicated in the Vedas, viz., battle, study of the Vedas, sacrifices, the restraint of passion that is so difficult, one goes to heaven by the southern path of the Sun (Dakshinayana). I have, before this, told thee that those very regions belong to persons that are observant of (Vedic) acts. Thou shalt see, however, that the northern path (Uttarayana) is travelled by those that are devoted to Yoga penances. Those eternal and bright regions to which that path leads belong to men of Yoga. Of these two, the northern path is much applauded by those conversant with the Puranas. Thou shouldst know that one acquires heaven through contentment. From contentment springs great happiness. There is nothing higher than contentment.