Atharvaveda 19.57.4

19.57.4

táṃ tvā svapna táthā sáṃ vidma sá tváṃ svapnā́śva iva kāyám áśva iva nīnāhám |
anāsmākáṃ devapīyúṃ píyāruṃ vapa yád asmā́su duṣvápnyaṃ yád góṣu yác ca no gr̥hé ||4||

Thee that art "harsh" by name, mouth of the black bird (-çakúni)—thee, O sleep, we thus know completely; do thou, O sleep, as a horse a halter, as a horse a girth, scatter him who is not of us, the god-reviler, the mocker.

What evil-dreaming is in us, what in our kine, and what in our house, that let him who is not of us, the god-reviler, the mocker, put on like a necklace (niṣká).