This verse of the Satapatha Brahmana calls Shudras and women as untruth . The part from where it is taken deals with the pravargya ceremony. 14.1.1.31 aśūdrociṣṭī eṣa vai dharmo ya eṣa tapati saiṣā śrīḥ satyaṃ jyotiranṛtaṃ strī śūdraḥ śvā kṛṣṇaḥ śakunistāni na prekṣeta necriyaṃ ca pāpmānaṃ ca nej...