Mahabharata 3.10.7

3.10.7

triviṣṭapagatā rājansurabhiḥ prārudatkila |
gavāṃ māta purā tāta tāmindro'nvakṛpāyata || 7 ||

"Vyasa said, 'O king, O son of Vichitravirya, what thou sayest is true! We know it well that a son is the best of all things and that there is nothing that is so good as a son. Instructed by the tears of Suravi, Indra came to know that the son surpasseth in worth other valuable possessions. O monarch, I will, in this connection, relate to thee that excellent and best of stories, the conversation between Indra and Suravi. In days of yore, Suravi, the mother of cows was once weeping in the celestial regions. O child, Indra took compassion upon her, and asked her, saying, 'O auspicious one! why dost thou weep? Is everything well with the celestials? Hath any misfortune, ever so little, befallen the world of men or serpents?' Suravi replied, 'No evil hath befallen thee that I perceive. But I am aggrieved on account of my son, and it is therefore, O Kausika, that I weep! See, O chief of the celestials, yonder cruel husbandman is belabouring my weak son with the wooden stick, and oppressing him with the (weight of the) plough, in consequence of which my child agitated with agony is falling upon the ground and is at the point of death. At sight of this, O lord of the celestials, I am filled with compassion, and my mind is agitated! The one that is the stronger of the pair is bearing his burthen of greater weight (with ease), but, O Vasava, the other is lean, and weak and is a mass of veins and arteries! He beareth his burthen with difficulty! And it is for him that I grieve. See, O Vasava, sore inflicted with the whip, and harassed exceedingly, he is unable to bear his burthen. And it is for him that, moved by grief, I weep in heaviness of heart and these tears of compassion trickle down my eyes!'