Ya-Sin 36:45

Wa-itha qeela lahumu ittaqoo mabayna aydeekum wama khalfakum laAAallakum turhamoon

But when it is said to them, "Beware of what is before you and what is behind you; perhaps you will receive mercy..."

And (they pay no heed) when it is said to them, “Save yourselves from that (punishment) which is before you (in this world) and that which will come after you (die), so that you may receive mercy”.