رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1647
The Book of the Prohibited actions
Prohibition of Plucking Grey Hairs
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : مَنْ عَمِلَ عَمَلاً لَيْسَ عَلَيْهِ أَمْرُنَا فَهُوَ رَدٌّ ((رَوَاهُ مُسْلِم)).
'Aishah (May Allah be pleased with her) said: The Messenger of Allah (ﷺ) said, "He who does something contrary to our way (i.e., Islam) will have it rejected." [Muslim].
Riyad as-Salihin, 1647