Ah, the old "..asking for a friend".
Your friend might have screwed up yes. If they are lucky, and dried off the seed asap, germination might not have been triggered. Store in a dry and dark place and check it every few hours. If the seed cracks open, he can chose to continue with germination.
If it doesn't crack open within the next 76hours, he can try to germinate it at a later time.
It's not a failsafe method as the seed may have started germination but didn't get far enough to crack open the shell. And the seedling will have died making it impossible to germinate further.