Translation:

31. For We sent against them a single Mighty Blast and they became like the dry stubble used by one who pens cattle.

Notes (Tafseer)

5151. See n. 1047 to vii. 78, and Cf. the same phrase "single Blast" used for the signal for the Resurrection in xxxvi. 53. In the case of the Thamud, the destruction seems to have been by a severe earthquake accompanied with a terrible rumbling noise.

5152. They became like dry sticks such as are used by herdsmen in making pens or enclosures for their cattle.