The Prophet ﷺ said, "He who lets the people hear of his good deeds intentionally, to win their praise, Allah will let the people know his real intention (on the Day of Resurrection), and he who does good things in public to show off and win the praise of the people, Allah will disclose his real intention (and humiliate him).  

قَالَ النَّبِيُّ ﷺ وَلَمْ أَسْمَعْ أَحَدًا يَقُولُ قَالَ النَّبِيُّ ﷺ غَيْرَهُ فَدَنَوْتُ مِنْهُ فَسَمِعْتُهُ يَقُولُ قَالَ النَّبِيُّ ﷺ: «مَنْ سَمَّعَ سَمَّعَ اللَّهُ بِهِ، وَمَنْ يُرَائِي يُرَائِي اللَّهُ بِهِ۔»  

[Machine] The Messenger of Allah ﷺ said, "I have not heard anyone other than him (referring to someone) saying, 'The Messenger of Allah ﷺ said.' So, I approached him closely and heard him saying, 'The Messenger of Allah ﷺ said, 'Whoever listens to me, Allah will make him hear, and whoever sees me in a dream, Allah will make him see.'"  

قَالَ رَسُولُ اللَّهِ ﷺ وَلَمْ أَسْمَعْ أَحَدًا غَيْرَهُ يَقُولُ قَالَ رَسُولُ اللَّهِ ﷺ فَدَنَوْتُ قَرِيبًا مِنْهُ فَسَمِعْتُهُ يَقُولُ قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ سَمَّعَ يُسَمِّعُ اللَّهُ بِهِ وَمَنْ رَاءَى يُرَائِي اللَّهُ بِهِ»