13th Ayah from Surah Fussilat
Sahih International
But if they turn away, then say, "I have warned you of a thunderbolt like the thunderbolt [that struck] 'Aad and Thamud.
Abdul Haleem
If they turn away, say, ‘I have warned you about a blast like the one which struck 'Ad and Thamud:
Mohsin Khan/Hilali
But if they turn away, then say (O Muhammad SAW): "I have warned you of a Sa'iqah (a destructive awful cry, torment, hit, a thunderbolt) like the Sa'iqah which overtook 'Ad and Thamud (people)."
Taqi Usmani
So, if they turn away, then say, “I have warned you of a calamity like the calamity of ‘Ād and Thamūd,
Pickthall
But if they turn away, then say: I warn you of a thunderbolt like the thunderbolt (which fell of old upon the tribes) of A'ad and Thamud;
Pickthall
But if they turn away, say thou: "I have warned you of a stunning Punishment (as of thunder and lightning) like that which (overtook) the 'Ad and the Thamud!"