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.
ahmad:3450ʿAbd al-Razzāq > Sufyān > Zayd b. Aslam > ʿAṭāʾ b. Yasār > Ibn ʿAbbās

[Machine] Shall I not inform you about the ablution (wudu) of the Messenger of Allah ﷺ? So he called for water and began scooping it with his right hand and pouring it over his left.  

أحمد:٣٤٥٠حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا سُفْيَانُ عَنْ زَيْدِ بْنِ أَسْلَمَ عَنْ عَطَاءِ بْنِ يَسَارٍ عَنِ ابْنِ عَبَّاسٍ قَالَ

أَلَا أُخْبِرُكُمْ بِوُضُوءِ رَسُولِ اللهِ ﷺ؟ فَدَعَا بِمَاءٍ فَجَعَلَ يَغْرِفُ بِيَدِهِ الْيُمْنَى ثُمَّ يَصُبُّ عَلَى الْيُسْرَى