To remove negative effects of Ketu and make it favorable 

This Jaap is recommended during Ketu Mahadasha or Antardasha. It helps to pacify the negative impact of Ketu and bring clarity, spiritual growth, and inner peace. 

Mantra: 

ॐ केतुं कृण्वन्नकेतवे पेशो मर्या अपेशसे। 

समुषद्भिरजायथा:।।