Bhagavatapurana 5.14.14

5.14.14

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yadā tu para-bādhayāndha ātmane nopanamati tadā hi pitṛ-putra-barhiṣmataḥ pitṛ-putrān vā sa khalu bhakṣayati //

14. When no food could be got even for himself by harassing strangers, he proceeds indeed to prey upon his own father or son, or even those that collect the sacred grass, or only his own parents and children.