The Law Code of Yājñavalkya 1.10.82

1.10.82

asyārthaḥ | hemantaśiśirayoś caturṇām aparapakṣāṇām aṣṭamīṣv aṣṭakāḥ (ĀśGṛ 2.4.1)) ity aṣṭakā vihitāḥ | tatra navamyāṃ yat kriyate tad anvaṣṭakyam | saptamyāṃ kriyamāṇaṃ pūrvedyuḥ | māsi māsi kṛṣṇapakṣe pañcamīprabhṛtiṣu yasyāṃ kasyāṃ cit tithāv anvaṣṭakyātideśena yad vihitam | amāvāsyāsyāṃ piṇḍapitṛyajñānantaraṃ yad vihitaṃ tat pārvaṇam | svargādikāmanāyāṃ kṛttikādinakṣatreṣu yad vihitaṃ tat kāmyam | abhyudayeṣu putrotpattyādiṣu taḍāgārāmadevatāpratiṣṭhādiṣu ca yad vihitaṃ tad ābhyudayikam | aṣṭamyāṃ aṣṭakā vihitāḥ | ekoddiṣṭam | atraikoddiṣṭaśabdena sapiṇḍīkaraṇaṃ lakṣayati, tatraikoddiṣṭasyāpi sadbhāvāt, sākṣād ekoddiṣṭe tadabhāvāt | atha vā gṛhyabhāṣyakāramate sākṣād ekoddiṣṭe 'pi pāṇihomasya sadbhāvāt sākṣād ekoddiṣṭam eva | eteṣām aṣṭānām ādyeṣu caturṣu sāgnikasyāgnau homaḥ | uttareṣu caturṣu pitryabrāhmaṇahaste | niragnikasyāpi pramītapitṛkasya dvijasya pārvaṇaṃ nityam iti tasyāpi pāṇāv eva homaḥ,

The meaning of this is: 'The aṣṭakās are prescribed on the eighth days of the four waning fortnights of the cold and dewy seasons' (ĀśGṛ 2.4.1), so the aṣṭakās are prescribed. Among these, that which is performed on the ninth day is the ānvaṣṭakya. That which is performed on the seventh day is the pūrvedyuḥ. 'Month by month' refers to that which is prescribed by transfer of the rule of the ānvaṣṭakya on any lunar day beginning from the fifth in the dark fortnight. That which is prescribed on the new moon day immediately following the piṇḍapitṛyajña is the pārvaṇa. That which is prescribed under lunar mansions such as Kṛttikā when desiring heaven and the like is the kāmya (optional). That which is prescribed on occasions of auspicious events such as the birth of a son, or the consecration of a pond, garden, or deity, is the ābhyudayika. On the eighth day, the aṣṭakā is prescribed. The ekoddiṣṭa: here, by the word ekoddiṣṭa, the author indicates the sapiṇḍīkaraṇa (rite of sapinda-investiture), because the character of an ekoddiṣṭa is also present therein, whereas in a direct ekoddiṣṭa that is absent. Alternatively, according to the opinion of the commentator on the Gṛhyasūtra, since the oblation into the hand exists even in the direct ekoddiṣṭa, it is precisely the direct ekoddiṣṭa. In the first four among these eight, the offering is made into the fire for one who possesses a sacred fire. In the latter four, into the hand of the Brahmin representing the ancestors. For a twice-born whose father is deceased, even if he does not maintain a sacred fire, the pārvaṇa is obligatory, and therefore for him too the oblation is only in the hand,