NAndI SrAddha is a naimittika karma which is part of the
karma being performed (karmAnga).
According to dharma SAstra, nAndI SrAddha should be done during
nAmakaraNa, annaprASana, caula, Go dAna, somayAga, upanayana, pumsavana, snAnakarma,
agni AdhAna and vivAha.
namAnna caula godAna somopanayapumsave !
snAnAdhAnavivAheshu nAndI SraAdham vidhIyate !!
---lokAkshi