Shiva Purana
प्रणवं मातृकायुक्तं देहे न्यस्य ऋषिर्भवेत् । दशमातृषडध्वादि सर्वं न्यासफलं लभेत् २६ ।
The devotee who practises the Japa of Praṇava (Om) with due ritualistic placings of fingers on the parts of his body becomes a sage. He shall attain all the benefits of the ritualistic Nyāsa such as the blessings of ten mothers and the (attainment of) six pathways.
english translation
praNavaM mAtRkAyuktaM dehe nyasya RSirbhavet । dazamAtRSaDadhvAdi sarvaM nyAsaphalaM labhet 26 ।
hk transliteration by Sanscript