[Machine] The Messenger of Allah ﷺ said, "Whoever conceals the faults of his brother in this world, Allah will conceal his faults in this world and the Hereafter. And whoever relieves the distress of a believer, Allah will relieve his distress on the Day of Resurrection. Allah will help His slave as long as the slave helps his brother." This narration is authentic according to the conditions of the two Shaykhs (i.e., Bukhari and Muslim), but they did not include it in their collections.
قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ سَتَرَ أَخَاهُ فِي الدُّنْيَا سَتَرَهُ اللَّهُ فِي الدُّنْيَا وَالْآخِرَةِ وَمَنْ نَفَّسَ عَنْ أَخِيهِ كُرْبَةً مِنْ كُرَبِ الدُّنْيَا نَفَّسَ اللَّهُ عَنْهُ كُرْبَةً مِنْ كُرَبِ يَوْمِ الْقِيَامَةِ وَاللَّهُ فِي عَوْنِ الْعَبْدِ مَا كَانَ الْعَبْدُ فِي عَوْنِ أَخِيهِ» هَذَا الْإِسْنَادُ صَحِيحٌ عَلَى شَرْطِ الشَّيْخَيْنِ وَلَمْ يُخَرِّجَاهُ على شرط البخاري ومسلم