Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ibnmajah:446 – Muḥammad b. al-Muṣaffá al-Ḥimṣī > Muḥammad b. Ḥimyar > Ibn Lahīʿah > Yazīd b. ʿAmr al-Maʿāfirī > Abū ʿAbd al-Raḥman al-Ḥubulī > al-Mustawrid b. Shaddād

"I saw the Messenger of Allah performing ablution, and he ran his little finger between his toes." (Sahih) Another chain with similar wording.  

ابن ماجة:٤٤٦ – حَدَّثَنَا مُحَمَّدُ بْنُ الْمُصَفَّى الْحِمْصِيُّ حَدَّثَنَا مُحَمَّدُ بْنُ حِمْيَرَ عَنِ ابْنِ لَهِيعَةَ حَدَّثَنِي يَزِيدُ بْنُ عَمْرٍو الْمَعَافِرِيُّ عَنْ أَبِي عَبْدِ الرَّحْمَنِ الْحُبُلِيِّ عَنِ الْمُسْتَوْرِدِ بْنِ شَدَّادٍ قَالَ

رَأَيْتُ رَسُولَ اللَّهِ ﷺ تَوَضَّأَ فَخَلَّلَ أَصَابِعَ رِجْلَيْهِ بِخِنْصِرِهِ قَالَ أَبُو الْحَسَنِ بْنُ سَلَمَةَ حَدَّثَنَا خَازِمُ بْنُ يَحْيَى الْحُلْوَانِيُّ حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا ابْنُ لَهِيعَةَ فَذَكَرَ نَحْوَهُ