A Muslim is a Muslim’s brother: he does not wrong him or abandon him. If anyone cares for his brother’s need, Allah will care for his need ; if anyone removes a Muslim’s anxiety, Allah will remove from him, on account of it, one of the anxieties of the Day of resurrection ; and if anyone conceals a Muslim’s fault, Allah will conceal his fault on the Day of resurrection. (Using translation from Abū Dāʾūd 4893)
أَخْبَرَهُ أَنَّ رَسُولَ اللهِ ﷺ قَالَ الْمُسْلِمُ أَخُو الْمُسْلِمِ لَا يَظْلِمُهُ وَلَا يُسْلِمُهُ مَنْ كَانَ فِي حَاجَةِ أَخِيهِ كَانَ اللهُ ﷻ فِي حَاجَتِهِ وَمَنْ فَرَّجَ عَنْ مُسْلِمٍ كُرْبَةً فَرَّجَ اللهُ عَنْهُ بِهَا كُرْبَةً مِنْ كُرَبِ يَوْمِ الْقِيَامَةِ وَمَنْ سَتَرَ مُسْلِمًا سَتَرَهُ اللهُ ﷻ يَوْمَ الْقِيَامَةَ