Kaushitakagrihyasutra 3.8.2

3.8.2

māghaśuklapakṣapratipadyaparājitāyāṃ diśi puṇye deśe pratyasya loṣṭān śāsa itthā iti pratidiśamṛṣīṃśchandāṃsi devatāḥ śraddhāmedhe ca tarpayitvā pratipuruṣaṃ pitaraḥ \2\

On the first day of the bright fortnight of Māgha, in the unconquered direction (north-east), in an auspicious place, having thrown clods of earth in each direction with "The ruler thus...", having satiated the seers, the metres, the deities, and faith and intellect, the fathers [are satiated] person by person.