Jami` at-Tirmidhi 39
جامع الترمذي#39Sahihحَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعِيدٍ، هُوَ الْجَوْهَرِيُّ حَدَّثَنَا سَعْدُ بْنُ عَبْدِ الْحَمِيدِ بْنِ جَعْفَرٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ أَبِي الزِّنَادِ، عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ صَالِحٍ، مَوْلَى التَّوْأَمَةِ عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا تَوَضَّأْتَ فَخَلِّلْ بَيْنَ أَصَابِعِ يَدَيْكَ وَرِجْلَيْكَ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ .
Ibn Abbas narrated that :Allah's Messenger said: "When performing Wudu go between the fingers of your hands and (toes of) your feet
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: 1:39