Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 43
Sanskrit:
इत्यशेषसमाम्नायपुराणोपनिषद्रस: ।समुद्धृत: पूर्वजातैर्व्योमयानैर्महात्मभि: ॥ ४३ ॥
ITRANS:
ity aśeṣa-samāmnāya-purāṇopaniṣad-rasaḥsamuddhṛtaḥ pūrva-jātairvyoma-yānair mahātmabhiḥ
Translation:
Thus the ancient saints who travel in the upper heavens distilled this nectarean and confidential essence of all the Vedas and Purāṇas.