Mahabharata 12.28.53

12.28.53

na hyeva puruṣo draṣṭā svargasya narakasya vā |
āgamastu satāṃ cakṣurnṛpate tamihācara || 53 ||

Thou beholdst them not today and they do not behold thee. O sinless one! No person can see either heaven or hell. The scriptures, however, are the eyes of the virtuous. O king, frame thy conduct according to the scriptures. What pure heart, one should practise first the vow of Brahmacharya and then beget children and then perform sacrifices, for paying off the debt one owes to the Pitris, the gods, and men. Performing sacrifices and engaged in procreating (children), after having first observed the vow of Brahmacharya, one who bath wisdom for his eyes, casting off all anxiety of heart, should pay court to heaven, this world, and his own soul. That king bent upon the practice of virtue who strives judiciously for acquiring Heaven and Earth and who takes of earthly goods just what is ordained (as the king's share) in the scriptures, wins a reputation that spread over all the worlds and among all creatures, mobile and immobile. The ruler of the Videhas, of clear understanding, having heard these words full of reason, become freed from grief, and taking Asma's leave proceeded towards his abode, O thou of unfading glory, cast off thy grief and rise up. Thou art equal to Sakra himself. Suffer thy soul to be gladdened. The earth has been won by thee in the exercise of Kshatriya duties. Enjoy her, O son of Kunti, and do not disregard my words.'"