The Mahabharata/Book 1: Adi Parva…
“ For when the sacrificial platform was being constructed, a professional builder of great intelligence and well-versed in the knowledge of laying foundations, a Suta by caste, well-acquainted with the Puranas, said, 'The soil upon which and the time at which the measurement for the sacrificial platform has been made, indicate that this sacrifice will not be completed, a Brahmana becoming the reason thereof.' Hearing this, the king, before his installation, gave orders to his gate-keepers not to admit anybody without his knowledge. ”
