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).

حَدَّثَنِي عَبْدُ اللَّهِ بْنُ هَاشِمٍ الْعَبْدِيُّ، حَدَّثَنَا بَهْزُ بْنُ أَسَدٍ، حَدَّثَنَا سُلَيْمَانُ بْنُ الْمُغِيرَةِ، حَدَّثَنَا ثَابِتٌ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " أُتِيتُ فَانْطَلَقُوا بِي إِلَى زَمْزَمَ فَشُرِحَ عَنْ صَدْرِي ثُمَّ غُسِلَ بِمَاءِ زَمْزَمَ ثُمَّ أُنْزِلْتُ " .