O twice-born one, in very ancient times called the Brahma-Kalpa, great Rishis, when they assembled together, felt this very doubt about the creation of the universe.
भृगुरुवाच ब्रह्मकल्पे पुरा ब्रह्मन् ब्रह्मर्षीणां समागमे। लोकसम्भवसंदेहः समुत्पन्नो महात्मनाम्॥