SB 9.21.14
iti prabhasya paniyam
mriyamanah pipasaya
pulkasayadadad dhiro
nisarga-karuno nrpah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Having spoken thus, King Rantideva, although on the verge of death because of thirst, gave his own portion of water to the candala without hesitation, for the King was naturally very kind and sober.