The upasana of Dhumavai Devi is made during the night. The place for upasana is cemetry, where Sadhaka should perform puja with naked body except underwear or it should be a lonely place.
Dhumavati Devi is not commonly know. She has fat body, eyes are fierce, wears dirty clothes, has dry hairs. Due to old age has bend in her spinal chord. A Sadhak is to perform one lac japa on the 14th day of lunar phase during Krishna Prakash (During Nights) in solitude, or in the cremation ground or in the forest by observing fast and remaining silent the whole day and night. Dhumvati yantra is used for all round success and spiritual uplift and be written on Bhooj Patra with Ashat Gand or on silver or gold plate.
A Yantra is an instrument, or a talisman or a mystical diagram usually in copper. It is a technique or path, considered the simplest and shortest, through which one can attain one's desires, and fulfill one's wishes. It is said that the 'Deities' reside in the Yantras and by performing 'Puja' or worship of Yantras, one can appease them, remove the malefic effects of planets, and increase the flow of positive influences. Procedures to be followed by you to place this energized Yantra.
1. First purify your body and start with a clear and positive mind frame 2. Find a place on the floor facing east, where you will be undisturbed. 3. Light the incense or diya. (It does not matter how many you light). 4. Lay a fresh flower and a fresh fruit on the altar. 5. Open the Yantra and place it along with the image of the deity of yantra and your isht God. 6. Take the water with any leaf from any tree and sprinkle the water on yourself followed by sprinkling the water on the Yantra. 7. Then purify your soul and surrender yourself completely in devotion to God and chant 21 times the following : "Dhung Dhung Dhumavati Tha Tha" 8. Close your eyes and concentrate on the deity to bless you with wishes.Now with all sincerity, ask God to grant you the desire of your life that you wanted to be fulfilled in your own language.
Vedic Yantras are Energised (Pran pratishta) by learned purohits, by reciting the vedic mantra of the particular Devi or Deva.