These Mantras regulate all the rites of a Brahmana's life, beginning with those consequent upon birth and the period after it, and ending with those consequent on death and the obsequial rites.
मन्त्रोऽयं जातकर्मादिाह्मणस्य विधीयते। जीवतोऽपि यथाकालं श्मशाननिधनादिभिः॥