Shiva Purana
सहस्रपूजया सत्यं सत्यलोकं लभेद्द्विजः । द्वादशांगुलमायामं द्विगुणं च ततोऽधिकम् १२ ।
By performing this worship a thousand times, a brahmin shall attain Satyaloka. A vessel made of wood or iron twelve aṅgulas in width, 24 aṅgulas in length and sixteen aṅgulas in height is called Śiva.
english translation
sahasrapUjayA satyaM satyalokaM labheddvijaH । dvAdazAMgulamAyAmaM dviguNaM ca tato'dhikam 12 ।
hk transliteration by Sanscript