Shiva Purana
लिंगं प्राधान्यतः स्थाप्यं तथाबेरं तु गौणकम् । लिंगाभावेन तत्क्षेत्रं सबेरमपि सर्वतः ४६ ।
The installation of the phallic emblem is primary and that of embodied idol is secondary. A temple with the embodied idol of Śiva is unfructuous if it has no phallic image.
english translation
liMgaM prAdhAnyataH sthApyaM tathAberaM tu gauNakam । liMgAbhAvena tatkSetraM saberamapi sarvataH 46 ।
hk transliteration by Sanscript