Shiva Purana
बिंदुनादमयं लिंगं स्थावरं जंगमं च यत् । भावनामयमेतद्धि शिवदृष्टं न संशयः ३६ ।
The Bindu and Nāda forms, the stationary or mobile ones are conceptual but belong to Śiva, undoubtedly.
english translation
biMdunAdamayaM liMgaM sthAvaraM jaMgamaM ca yat । bhAvanAmayametaddhi zivadRSTaM na saMzayaH 36 ।
hk transliteration by Sanscript