Shiva Purana
आधारशक्तिं कल्याणीं श्यामां ध्यायेदधो भुवि ॥ तस्याः पुरस्तादुत्कंठमनन्तं कुंडलाकृतिम् ॥ २८ ॥
One should meditate on the auspicious darkness of the base energy on the ground below. In front of her was a necklace in the shape of an infinite earring.
english translation
AdhArazaktiM kalyANIM zyAmAM dhyAyedadho bhuvi ॥ tasyAH purastAdutkaMThamanantaM kuMDalAkRtim ॥ 28 ॥
hk transliteration by Sanscript