:sl:
I also don't have a scholar view but I know dying with Henna only is permit in Islam as I seen many Muslims dye their beards brown. Best to ask a scholar of Islam (
www.askimam.org) about this and insha'Allah it will give you the answer.
I also do not know what a katam is though in Urdu,it means 'finish'.But I'm sure you didn't mean finish.Which language does that word origin from? If you know it may help me in assisting you as I know a bit of almost all main languages(Urdu,Hindi,Chinese, English,French,Punjabi,Persian,Spanish,a bit of japanese and bangli). If Khatam resides in any of these languages please specify which as I may know,Insha'Allah.
:wa: