Al-Mutaffifin 83:26

Meccan · The Defrauding

خِتَـٰمُهُۥ مِسْكٌ ۚ وَفِى ذَٰلِكَ فَلْيَتَنَافَسِ ٱلْمُتَنَـٰفِسُونَ

The last of it is musk. So for this let the competitors compete