Skandapurana 6.3.51.45

6.3.51.45

iṣetvā dikamantraughaṃ jyotirbrāhmaṇameva ca .
gāyatryaṃ vai madhu caiva maṇḍalabrāhmaṇāni ca .. 51.45 ..

or, if he is a knower of the Yajurveda, recites with devotion these texts to be recited:
the collection of mantras beginning with "Iṣe tvā...", the Jyotirbrāhmaṇa,
the Gāyatra, the Madhu, and the Maṇḍalabrāhmaṇas,