Shiva Purana

siva.sh/siva-purana/saturda-samhita/1/17

एकविंशतिमः कल्पः पीतवासा इति स्मृतः ।। ब्रह्मा यत्र महाभागः पीतवासा बभूव ह ।।१७।।

sanskrit

The twenty-first Kalpa is said to be Pītavāsas wherein Brahmā of great achievement became yellow-robed.

english translation

ekaviMzatimaH kalpaH pItavAsA iti smRtaH || brahmA yatra mahAbhAgaH pItavAsA babhUva ha ||17||

hk transliteration by Sanscript