SB 4.5.7

athartvijo yajamānaḥ sadasyāḥ
 kakubhy udīcyāṁ prasamīkṣya reṇum
tamaḥ kim etat kuta etad rajo ’bhūd
 iti dvijā dvija-patnyaś ca dadhyuḥ
Synonyms: 
atha — at that time; ṛtvijaḥ — the priests; yajamānaḥ — the chief person performing the sacrifice (Dakṣa); sadasyāḥ — all the persons assembled in the sacrificial arena; kakubhi udīcyām — in the northern direction; prasamīkṣya — seeing; reṇum — the dust storm; tamaḥ — darkness; kim — what; etat — this; kutaḥ — from where; etat — this; rajaḥ — dust; abhūt — has come; iti — thus; dvijāḥ — the brāhmaṇas; dvija-patnyaḥ — the wives of the brāhmaṇas; ca — and; dadhyuḥ — began to speculate.
Translation: 
At that time, all the persons assembled in the sacrificial arena — the priests, the chief of the sacrificial performance, and the brāhmaṇas and their wives — wondered where the darkness was coming from. Later they could understand that it was a dust storm, and all of them were full of anxiety.