Get the mantra given below engraved on a gold sheet and after that purify it with panchamrit. Get a cats eye ring made in gold and purify this as well. And sit facing the northeast quarter on an auspicious Saturday night. Pray to goddess kali for the peace of ketu. You need to take special care of being pure and ensuring celibacy on your part. You should consume food that you can digest but by nature should be hot. Wearing the roots of kush plant is supposed to be beneficial.

Ketukacham

Ketuh karalbadanah chitravarnah kiritinum

Prunmami sadaketuh dhwajakarah graheswaram

Tritvarnah sirah paatu bhaal dhumrusbhdhutih

Paatu netrey ving lakshah Shruti mein ruktlochanah

Ghravah paatu shuvarnarvshichbukah sihikasutah

Paatu kunthah ch mein ketu skandho paatu grahadhipah

Hasto paatu surshresthah kuchih paatu mahagrahah

Singhasunah kahin paatu Madhya paatu mahasurah

Uru paatu mahashirsho januni mestikopanah

Paatu padoo ch mey krurah swarg nurpingalah

Th ind kavachah divyah sarvrogvinashnam

Sarvshatruvinashah ch dharyed vijayi bhavet

Ketu Shtuti

Anekrupvarnasch sutsosth shashtrush

Utpatrupi ghorasch peeda dahtu mein shirati

Viniyog

Ketukrishwatriti mantrasya madhuchchanda rishih ketudervata gayatri chandah ketumantrajapey viniyogah