Sunan an-Nasa'i 5068
سنن النسائي#5068Sahihأَخْبَرَنَا قُتَيْبَةُ، عَنْ عَبْدِ الْعَزِيزِ، عَنْ عُمَارَةَ بْنِ غَزِيَّةَ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنْ نَتْفِ الشَّيْبِ .
It was narrated from 'Amr bin Shu'aib, from his father, from his grandfather, that:The Messenger of Allah [SAW] forbade plucking gray hairs
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahHasan Sahih
Al-AlbaniHasan Sahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 48:29