ShreeYantra Sthaapana in one`s home/office/ vehicle is performed on a Friday. Firstly, the yantra needs to be dowsed in saline water overnight (Thursday night). This takes away all negativism from the crystal. Then it must be taken out, washed in regular water and needs to be kept on damp earth (mud), under sunlight for few hours. Then only it can be taken for puja purposes.
The Yantra must be placed on a plate and washed with water and milk mixed with saffron. It should be washed with water once more. One should light incense and spray water where the Yantra will be kept for chanting "Aim Hreem Namah". One needs to place a yellow cloth and a sheet of silver or gold and the Yantra must be placed atop it. Kum Kum or Sandal paste and a Coral mala can be applied on the Yantra. A Shivling should also be placed near the Yantra during Pran Prathistha. It is customary to offer flowers (yellow) ,Gur (jaggery) and raw turmeric and incense to the Yantra. Then, one must chant the following mantra 108 times on a lotus seed rosary- "Om, Shreem Hreem Shreem Kamle Kamalalaye Praseed, Praseed, Shreem, Hreem Shreem Om Mahalaxmaye Namah"
Later, the Shree Yantra must be covered with red cloth.
It is customary to pray and worship every Friday without moving from the seat. The red cloth should be taken off every Friday and fresh flowers needs to provided, along with gur (jaggery), raw turmeric and incense to the Yantra. One can just catch a glimpse (darshan) of the Yantra by lifting the red cloth for the rest of the days.
The tip of the Shree Yantra is called the aerial or antenna in scientific terms and is called Mahatripur Sundari, which means Niwas Sthan (home) of Sampoorna (all) Devis and Devtas (God and Goddess) in spiritual idioms.
Meditation is done on the tip of the Shree Yantra (Mahatripur Sundari) and while chanting Mahalaxmi Mantra, one should concentrate on the crest and meditate with open eyes. It is also useful for students to attain concentration and intelligence.
Since Shreeyantra works on the cosmic ray theory, apart from Hindus even Muslims, Parsis, Christians and people following other religions also believe in it, because they have faith in the cosmic ray theory of the stones. They do not however perform pujas like the Hindus, but just keeps it near their Holy Scriptures or at the place of worship. They also focus on the crest and ruminate while chanting lines from their holy books with open eyes.
