Then put the twigs into havan kund with one piece of camphor and burn it. During this process chant the Gaytri mantra again and again till such time the fire is lighted sufficiently. Then chant the Gaytri mantra and at the last add the word Swaha and offer ghee with tablespoon, quantity equivalent to 4 to 5 drops. And if you are alone then also offer in fire pinch of havan samagri from your right hand's finger and thumb avoiding forefinger. So this offering may be of 11 times, 21 times or 51 times as the time suits.

The havan with Ved mantras are always offered as the best worship of God only please. Do havan daily and both times.

At the core of Astrology, Pitra Dosh is one type of Yoga, which is formed by various combinations and placements of planets and houses. As per Astrology system, Sun is the symbol of Father. Furthermore, the 10th house in the horoscope also indicates Father and related aspects. Hence, if any negative combination of Sun or the 10th house, indicates presence of some kind of Pitra Dosh.