Shiva Purana
द्विजास्ते मुक्तिमापन्नाश्चतुर्द्दिक्षु शिवास्पदम् ॥ क्रोशमात्रं तदा जातं लिंगरूपिण एव च ॥ ४९॥
The brahmins attained salvation. The supporting base of Śiva in the form of Liṅga extended to 3 kilometres in each of the four directions.
english translation
dvijAste muktimApannAzcaturddikSu zivAspadam ॥ krozamAtraM tadA jAtaM liMgarUpiNa eva ca ॥ 49॥
hk transliteration by Sanscript