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
bayhaqi:310 – Abū Zakariyyā b. Abū Isḥāq > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Muḥammad b. ʿAbdullāh b. ʿAbd al-Ḥakam > Ibn Wahb > ʿAbdullāh b. ʿUmar b. Ḥafṣ b. ʿĀṣim b. ʿUmar b. al-Khaṭṭāb Wamālik b. Anas > Nāfiʿ

[Machine] That Abdullah ibn Umar used to dip his fingers in water and then wipe his ears with them.  

البيهقي:٣١٠ – أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ أنا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ عَبْدِ الْحَكَمِ أنا ابْنُ وَهْبٍ أنا عَبْدُ اللهِ بْنُ عُمَرَ بْنِ حَفْصِ بْنِ عَاصِمِ بْنِ عُمَرَ بْنِ الْخَطَّابِ وَمَالِكُ بْنُ أَنَسٍ عَنْ نَافِعٍ

أَنَّ عَبْدَ اللهِ بْنَ عُمَرَ كَانَ يُعِيدُ أُصْبُعَيْهِ فِي الْمَاءِ فَيَمْسَحُ بِهِمَا أُذُنَيْهِ  

See similar narrations below:

Collected by Mālik
malik:2-37 – Yaḥyá > Mālik > Nāfiʿ

Yahya related to me from Malik from Nafi that Abdullah ibn Umar used two fingers to take water to his ears.  

مالك:٢-٣٧ – حَدَّثَنِي يَحْيَى عَنْ مَالِكٍ عَنْ نَافِعٍ

أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ كَانَ يَأْخُذُ الْمَاءَ بِأَصْبُعَيْهِ لأُذُنَيْهِ