When a child is born, a religious sacrament called ‘jātakarma’ is performed. Āyuṣya is the second of the rites involved in this. It consists in the father muttering over the navel or in the right ear of the child, certain mantras invoking the bestowal of long life. These mantras, beginning with ‘agne āyurasi,’ are taken from the Kāṭhaka Saṁhitā (11.7.66) wherein the word ‘āyuṣmat’ is repeated several times.
See also JĀTAKARMA.