यच्चेरुर्ब्रह्महत्यांह: क्षपणं स्वगुरोर्व्रतम् ॥ ६१ ॥
yac cerur brahma-hatyāṁhaḥ
kṣapaṇaṁ sva-guror vratam
vaiśampāyana-śiṣyāḥ — the disciples of Vaiśampāyana; vai — indeed; caraka — named the Carakas; adhvaryavaḥ — authorities of the Atharva Veda; abhavan — became; yat — because; ceruḥ — they executed; brahma-hatyā — due to the killing of a brāhmaṇa; aṁhaḥ — of the sin; kṣapaṇam — the expiation; sva-guroḥ — for their own guru; vratam — the vow.
The disciples of Vaiśampāyana became authorities in the Atharva Veda. They were known as the Carakas because they executed strict vows to free their guru from his sin of killing a brāhmaṇa.