ENOfficial
Narrated Abdullah ibn Abbas: Sa'id ibn Jubayr reported: Ibn Abbas saw the Messenger of Allah (ﷺ) performed ablution. He narrated the tradition which says that he (the Prophet) performed each detail of ablution three times. He wiped his head and ears once.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، أَخْبَرَنَا عَبَّادُ بْنُ مَنْصُورٍ، عَنْ عِكْرِمَةَ بْنِ خَالِدٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، رَأَى رَسُولَ اللَّهِ صلى الله عليه وسلم يَتَوَضَّأُ . فَذَكَرَ الْحَدِيثَ كُلَّهُ ثَلاَثًا ثَلاَثًا قَالَ وَمَسَحَ بِرَأْسِهِ وَأُذُنَيْهِ مَسْحَةً وَاحِدَةً .
sunnah.com