Shiva Purana
चतुरंगुलमुच्छ्रायं रम्यं वेदिकया युतम् । उत्तमं लिंगमाख्यातं मुनिभिः शास्त्रकोविदैः २९ ।
A phallic image, four angulas (inches) in height, with a splendid pedestal is mentioned as the most excellent by sages who are well-versed in sacred lore.
english translation
caturaMgulamucchrAyaM ramyaM vedikayA yutam । uttamaM liMgamAkhyAtaM munibhiH zAstrakovidaiH 29 ।
hk transliteration by Sanscript