ENOfficial
It is narrated on the the outhority of Anas b. Malik that the Messenger of Allah (ﷺ) said: (the angels) came to me and took me to the Zamzam and my heart was opened and washed with the water of Zamzam and then I was left (at my place).
Source: sunnah.com
Other translations
Arabic
حَدَّثَنِي عَبْدُ اللَّهِ بْنُ هَاشِمٍ الْعَبْدِيُّ، حَدَّثَنَا بَهْزُ بْنُ أَسَدٍ، حَدَّثَنَا سُلَيْمَانُ بْنُ الْمُغِيرَةِ، حَدَّثَنَا ثَابِتٌ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أُتِيتُ فَانْطَلَقُوا بِي إِلَى زَمْزَمَ فَشُرِحَ عَنْ صَدْرِي ثُمَّ غُسِلَ بِمَاءِ زَمْزَمَ ثُمَّ أُنْزِلْتُ " .
sunnah.com