Guru Yantra must be published on Thursday during Brihaspati Hora and Brihaspati Nakshatra. Firstly, take a bath and bathe the yantra with Gomutra (cow urine), Ganga water, and cow milk. Now place the yantra at the place of worship, light the lamp and carry out panchopchar puja. After this, offer yellow flowers, yellow fruits, and yellow dessert. Chant Guru Beej Mantra “ॐ ग्रां ग्रीं ग्रौं सः गुरुवे नमः / oṃ grāṃ grīṃ grauṃ saḥ guruve namaḥ”. Use yellow sandalwood mala when chanting.