Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 55

Sanskrit:

श्यामैकवर्णान् वरुणो हयान् शुक्लान्मनोजवान् ।अष्टौ निधिपति: कोशान् लोकपालो निजोदयान् ॥ ५५ ॥

ITRANS:

śyāmaika-varṇān varuṇohayān śuklān mano-javānaṣṭau nidhi-patiḥ kośānloka-pālo nijodayān

Translation:

Lord Varuṇa offered horses as swift as the mind, some of which were pure dark-blue, others white. The treasurer of the demigods, Kuvera, gave his eight mystic treasures, and the rulers of various planets each presented their own opulences.

Purport:

Śrīla Śrīdhara Svāmī comments as follows on this verse: “The master of the treasury is Kuvera, and the eight treasures are his nidhis. These are described as follows: ‘The eight mystic treasures are called Padma, Mahāpadma, Matsya, Kūrma, Audaka, Nīla, Mukunda and Śaṅkha.’”