Digha Nikaya 1:617
SUJATOSeyyathāpi nāma kaṇikārapupphaṁ pītaṁ pītavaṇṇaṁ pītanidassanaṁ pītanibhāsaṁ. Seyyathā vā pana taṁ vatthaṁ bārāṇaseyyakaṁ ubhatobhāgavimaṭṭhaṁ pītaṁ pītavaṇṇaṁ pītanidassanaṁ pītanibhāsaṁ.
They’re like a champak flower that’s yellow, with yellow color and yellow appearance. Or a cloth from Varanasi that’s smoothed on both sides, yellow, with yellow color and yellow appearance.