Yajnavalkya said Listen to me, O foremost of men, as I tell you what the duration of time is about the Supreme Purusha. Ten thousand Kalpas are said to form a single day of his.
याज्ञवल्क्य उवाच अव्यक्तस्य नरश्रेष्ठ कालसंख्यां निबोध मे। पञ्चकल्पसहस्राणि द्विगुणान्यहरुच्यते॥