Mantra Maharnava (Khemraj Edition, 1924)

...in the Dattatreya Tantra is: "Oṁ Salutations to the Primeval Form, perform attraction of such-and-such, do, do, Svāhā." This is a twenty-one-syllable mantra. Its procedure: Chant it one hundred and eight times. Perfection is attained. Once the mantra is perfected, the practitioner performs the rituals. Thus, the Lord said: "I will speak the attraction method; listen and make the effort. The attraction of kings and all subjects will truly happen. Write the mantra on a bhurja birch bark leaf using the juice of black datura leaves mixed with gorochana, with a pen made of white kavira nerium oleander. Write the name of the person in the middle and heat it over the embers of a khadira acacia catechu fire; they will come from even a hundred yojanas a long distance unit away. There is no other way, as spoken by Shiva. || 122 || Write the mantra on birch bark using the blood of the ring finger. Write the name in the middle and place it in honey; the person is attracted and arrives. This is a called a perfected ritual. It should not be given to just anyone, as it is rare even for the gods. || 123 || Write the mantra on a human skull using cow gorochana. Heat it over khadira embers at all three times of day with effort; even Urvashi a celestial maiden will come. There is no other way, as spoken by Shiva. It should not be given to just anyone, as it is rare even for the gods. || 124 ||