“Abu Quhaifah was brought to the Prophet ﷺ on the Day of the Conquest (of Makkah), and his head was all white. The Messenger of Allah ﷺ said: ‘Take him to some of his womenfolk and let them change this, but avoid black.’”  

جِيءَ بِأَبِي قُحَافَةَ يَوْمَ الْفَتْحِ إِلَى النَّبِيِّ ﷺ وَكَأَنَّ رَأْسَهُ ثَغَامَةٌ فَقَالَ رَسُولُ اللَّهِ ﷺ اذْهَبُوا بِهِ إِلَى بَعْضِ نِسَائِهِ فَلْتُغَيِّرْهُ وَجَنِّبُوهُ السَّوَادَ  

“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.’”  

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ أَحْسَنَ مَا اخْتَضَبْتُمْ بِهِ لَهَذَا السَّوَادُ أَرْغَبُ لِنِسَائِكُمْ فِيكُمْ وَأَهْيَبُ لَكُمْ فِي صُدُورِ عَدُوِّكُمْ