Shiva Purana
श्रीकृष्ण उवाच ॥ किमिदं लिंगमाख्यातं कथं लिंगी महेश्वरः ॥ कथं च लिंगभावो ऽस्य कस्मादस्मिञ्छिवो ऽर्च्यते ॥ ६ ॥
Śrī Kṛṣṇa said:— What is a Liṅga? How is lord Śiva a Liṅgin? How did he have the status of a Liṅga? Why is he worshipped in it?
english translation
zrIkRSNa uvAca ॥ kimidaM liMgamAkhyAtaM kathaM liMgI mahezvaraH ॥ kathaM ca liMgabhAvo 'sya kasmAdasmiJchivo 'rcyate ॥ 6 ॥
hk transliteration by Sanscript