
Vyasa’s curse to the second widowed wife of his half brother on the son to be born to them. The second widowed princess was frightened at the ugly sight of Vyasa during their union. Thus, Pandu, a pale looking son was born to them. Quoted in P.58.
Sources, Seer of the Fifth Veda: Kr̥ṣṇa Dvaipāyana Vyāsa in the Mahābhārata