Shiva Purana
पितृमातृस्वरूपेण शिवलिंगं प्रपूजयेत् । भर्गः पुरुषरूपो हि भर्गा प्रकृतिरुच्यते ९५ ।
Bharga is Puruṣa (Cosmic man or Being) and Bhargā is Prakṛti (Cosmic Nature).
english translation
pitRmAtRsvarUpeNa zivaliMgaM prapUjayet । bhargaH puruSarUpo hi bhargA prakRtirucyate 95 ।
hk transliteration by Sanscript