“The Messenger of Allah ﷺ said: ‘The best thing with which you can dye your hair is this black (dye). It makes your women desire you and creates fear in the hearts of your enemies.’” (Using translation from Ibn Mājah 3625)
"أحْسَنُ ما اختضَبْتُمْ به من هَذَا السوادِ أرغَبُ لنسائكم وأَهْيبُ لكم في صدور عَدُوَّكم".