Saving a believer's prestige and honor

من رَدَّ عَن عِرضِ اَخیهِ المُسلِمِ وَجَبَت لَهُ الجَنَّةُ اَلبَتَّةَ

The messenger of Allah (saw): whoever saves a believer's prestige and honor, he will undoubtedly deserve paradise.

Thawab al-a'mal wa 'iqab al-a'mal (book)