Translation:

44. But they insolently defied the command of their Lord: so the stunning noise (of an earthquake) seized them even while they were looking on.

Notes (Tafseer)

5021. They had already defied the order to preserve the She-camel, which was a sign from Allah. See xi. 64-65 and n. 1560. They continued to flout the warnings of the prophet until the earthquake came on them with a stunning noise and buried them where they were: vii. 78; and xi. 67.

5022. Sa'iqat: a stunning sound like that of thunder and lightning (ii. 55); such a sound often accompanies an earthquake (see xli. 17, n. 4485, and vii. 78 and n. 1047).