SB 10.84.43

ta enam ṛṣayo rājan
 vṛtā dharmeṇa dhārmikam
tasminn ayājayan kṣetre
 makhair uttama-kalpakaiḥ
Synonyms: 
te — they; enam — him; ṛṣayaḥ — the sages; rājan — O King (Parīkṣit); vṛtāḥ — chosen; dharmeṇa — according to religious principles; dhārmikam — who was religious; tasmin — in that; ayājayan — they engaged in executing sacrifices; kṣetre — holy field (of Kurukṣetra); makhaiḥ — with fire rituals; uttama — superexcellent; kalpakaiḥ — whose arrangements.
Translation: 
Thus requested by him, O King, the sages engaged the pious Vasudeva in performing fire sacrifices at that holy place of Kurukṣetra according to strict religious principles and with most excellent ritual arrangements.