Shama-il Tirmidhi Chapter 007, Hadith Number 005 (052).


'Abdullah bin 'Umar Radiyallahu 'Anhu related the same hadith from Rasulullah Sallallahu 'Alayhi Wasallarn that: "Verily use the kuhl made from ithmid. It brightens the vision and strengthens the growth of the eye lashes".

Commentary.
In all the above narrations the use of kuhl made from ithmid has be stressed. Only those eyes are meant, that agree with the use of it, otherwise, because of certain eye conditions kuhl does not agree with some people, as was mentioned previously. The 'ulama have written that due to these commands and practices it is sunnah to use kuhl, and it is better to use the one made from ithmid. If one uses kuhl made from any other substance it will be regarded as sunnah, but the virtue is obtained by using kuhl made of ithmid.