Markandeyapurana 51.13

51.13

carācaragururbrahmā yā yasya kuladevatā /
anyagarbhe parān garbhān sadaiva parivartayan //

Now the second son assigns good and bad fortune to men, while he says repeatedly, “let it be so! hence he is called Ukti,[6] and that is his precise function. Hence wise men must always say, “May fate be auspicious!” And when anything bad is heard or spoken, let praise be offered to Śiva, and to Brahmā, the spiritual preceptor of all that exists both moveable and immoveable, and to each person’s own particular family-deity.

The son who finds delight in always interchanging the foetus between one womb and another, and in interchanging the words in the mouth of a speaker, is called Parivartaka[7]; a wise man should preserve himself against him by means of white mustard and the prayers and spells that destroy Rākṣasas.