ye tv iha yathaivamuna vihimsita jantavah paratra yama-yatanam upagatam ta eva ruravo bhutva tatha tam eva vihimsanti tasmad rauravam ity ahu rurur iti sarpad ati-krura-sattvasyapadesah.
ye—those who; tu—but; iha—in this life; yatha—as much as; eva—certainly; amuna—by him; vihimsitah—who were hurt; jantavah—the living entities; paratra—in the next life; yama-yatanam upagatam—being subjected to miserable conditions by Yamaraja; te—those living entities; eva—indeed; ruravah—rurus (a kind of envious animal); bhutva—becoming; tatha—that much; tam—him; eva—certainly; vihimsanti—they hurt; tasmat—because of this; rauravam—Raurava; iti—thus; ahuh—learned scholars say; ruruh—the animal known as ruru; iti—thus; sarpat—than the snake; ati-krura—much more cruel and envious; sattvasya—of the entity; apadesah—the name.
In this life, an envious person commits violent acts against many living entities. Therefore after his death, when he is taken to hell by Yamaraja, those living entities who were hurt by him appear as animals called rurus to inflict very severe pain upon him. Learned scholars call this hell Raurava. Not generally seen in this world, the ruru is more envious than a snake.
According to Sridhara Svami, the ruru is also known as the bhara-srnga (ati-krurasya bhara-srngakhya-sattvasya apadesah samjna). Srila Jiva Gosvami confirms this in his Sandarbha: ruru-sabdasya svayam muninaiva tika-vidhanal lokesv aprasiddha evayam jantu-visesah. Thus although rurus are not seen in this world, their existence is confirmed in the sastras.
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