Sunan an-Nasa'i 5240
سنن النسائي#5240Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ أَخْبَرَنِي الأَشْعَثُ، قَالَ سَمِعْتُ أَبِي يُحَدِّثُ، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ، وَذَكَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُحِبُّ التَّيَامُنَ مَا اسْتَطَاعَ فِي طُهُورِهِ وَتَنَعُّلِهِ وَتَرَجُّلِهِ .
It was narrated from 'Aishah that:The Messenger of Allah [SAW] liked to start on the right whenever possible; when purifying himself, when putting on his shoes, and when combing his hair
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:
In-book reference: 48:201