Vajrasuci (Siddhacarya Ghoshapada) 44

44

idaṃ ca vaiśampāyanavākyam :
pañcendriyārṇavaṃ ghoraṃ yadi śūdro'pi tīrṇavān
tasmai dānaṃ pradātavyamaprameyaṃ yudhiṣṭhira

And this is the statement of Vaiśampāyana:
If even a śūdra has crossed the dreadful ocean of the five senses,
to him boundless gifts should be given, O Yudhiṣṭhira.