فَبَشِّرْهُم بِعَذَابٍ أَلِيمٍ
Fabashshirhum biAAa tha bin aleem in Hence, give them the tiding of grievous suffering [in the life to come] -
 - Mohammad Asad
Therefore, proclaim to them a painful punishment,
 - Muhammad Farooq-i-Azam Malik
So give them good news of a painful punishment.
 - Mustafa Khattab
So give them tidings of a painful doom,
 - Marmaduke Pickthall
So announce to them a Penalty Grievous
 - Abdullah Yusuf Ali