I heard Messenger of Allah ﷺ saying. "All the sins of my followers will be forgiven except those of the Mujahirin (those who commit a sin openly or disclose their sins to the people). An example of such disclosure is that a person commits a sin at night and though Allah screens it from the public, then he comes in the morning, and says, 'O so-and-so, I did such-and-such (evil) deed yesterday,' though he spent his night screened by his Lord (none knowing about his sin) and in the morning he removes Allah's screen from himself."  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ كُلُّ أُمَّتِي مُعَافًى إِلاَّ الْمُجَاهِرِينَ وَإِنَّ مِنَ الْمَجَانَةِ أَنْ يَعْمَلَ الرَّجُلُ بِاللَّيْلِ عَمَلاً ثُمَّ يُصْبِحَ وَقَدْ سَتَرَهُ اللَّهُ فَيَقُولَ يَا فُلاَنُ عَمِلْتُ الْبَارِحَةَ كَذَا وَكَذَا وَقَدْ بَاتَ يَسْتُرُهُ رَبُّهُ وَيُصْبِحُ يَكْشِفُ سِتْرَ اللَّهِ عَنْهُ  

All the people of my Ummah would get pardon for their sins except those who publicise them. And (it means) that a servant should do a deed during the night and tell the people in the morning that he has done so and so, whereas Allah has concealed it. And he does a deed during the day and when it is night he tells the people, whereas Allah has concealed it. Zuhair has used the word hijar for publicising.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ كُلُّ أُمَّتِي مُعَافَاةٌ إِلاَّ الْمُجَاهِرِينَ وَإِنَّ مِنَ الإِجْهَارِ أَنْ يَعْمَلَ الْعَبْدُ بِاللَّيْلِ عَمَلاً ثُمَّ يُصْبِحُ قَدْ سَتَرَهُ رَبُّهُ فَيَقُولُ يَا فُلاَنُ قَدْ عَمِلْتُ الْبَارِحَةَ كَذَا وَكَذَا وَقَدْ بَاتَ يَسْتُرُهُ رَبُّهُ فَيَبِيتُ يَسْتُرُهُ رَبُّهُ وَيُصْبِحُ يَكْشِفُ سِتْرَ اللَّهِ عَنْهُ قَالَ زُهَيْرٌ وَإِنَّ مِنَ الْهِجَارِ