Ketu Gayatri Mantra
Om Ashwadwajaya Vidmahe
Shoola Hasthaya Dheemahi
Thanno Ketu Prachodayath
Ketu represents Spiritual, Gnana, liberation from both cycling(Moksha), detachment, Vedic knowledge, separation, litigation, frustration.
Ketu makes a man get Sanyasa.
Ketu gives detachment in material life. So it will affects in 2 , 7 houses.
Kethu makes separation. So if a person has Ketu in 2, 4,9 houses it will gives separation with family, Mother, Father.
Ketu gives wisdom & Vedic knowledge. If one person has Ketu in 5 sure that person will have great knowledge and enlighten to human society.He will do amazing works in Vedic.
Kethu gives ardent spiritual practices in 10 th place. If one person has 10 th Ketu in exaltation sure that person has amazing experiences in Spiritual.
Ketu gives Moksha from birth cycling. 12th Ketu gives Moksha.