The full-moon day of the month of Āśvayuja or Āśvina (September-October) is called ‘āśvayujī’ and a gṛhya rite (rites mentioned in the gṛhyasūtras, one of the seven pākayajñas) conducted by a householder on this day is also called by this name.
In this rite, after having adorned the house, having bathed and put on clean or white garments, the householder is expected to offer cooked food to Paśupati (Śiva) and also offer oblations of clarified butter to the Aśvins, the twin deities.
The rite is sometimes called ‘Pṛṣātaka,’ and is performed for obtaining general prosperity. Tying of amulets of herbs on the arms is also recommended in this rite.
See also PĀKAYAJÑA.