Camphor

 

Root letters:

Kaf-Fa-Ra

 

kafur

76:5
إِنَّ الأَبْرَارَ يَشْرَبُونَ مِنْ كَأْس ٍ كَانَ مِزَاجُهَا
كَافُورا ً
'Inna Al-'Abrāra Yashrabūna Min Ka'sin Kāna Mizājuhā
Kāfūrāan
 

As for the pious, they will drink from a cup with the scent of 
musk (camphor).