Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
यश्चरेद्विधिवद्विप्र समा द्वादश संततः / त्रिनाचिकेतस्त्रै विद्यो यश्च धर्मान्द्विजः पठेत्
yaścaredvidhivadvipra samā dvādaśa saṃtataḥ / trināciketastrai vidyo yaśca dharmāndvijaḥ paṭhet
婆罗门啊!凡依仪轨连续行持十二年者,名为“三那奇迦多”(trināciketa)与“三吠通达者”(traividya);又有诵读诸法(dharma)之二生者亦然。