Al-Adab Al-Mufrad, Book 33, Hadith 758 (English) ⓘ
Abu'l-Haytham said, "Some people came to 'Uqba ibn 'Amir and said, 'We have some neighbours who drink (wine) and behave incorrectly. Shall we bring them before the ruler?' 'No,' he replied, 'I heard the Messenger of Allah, may Allah bless him and grant him peace, say, "Whoever sees the fault of a Muslim and then veils it, it is as if he brought girl buried alive back to life from her grave.''"
حَدَّثَنَا بِشْرُ بْنُ مُحَمَّدٍ، قَالَ: أَخْبَرَنَا عَبْدُ اللهِ، قَالَ: حَدَّثَنَا إِبْرَاهِيمُ بْنُ نَشِيطٍ، عَنْ كَعْبِ بْنِ عَلْقَمَةَ، عَنْ أَبِي الْهَيْثَمِ قَالَ: جَاءَ قَوْمٌ إِلَى عُقْبَةَ بْنِ عَامِرٍ فَقَالُوا: إِنَّ لَنَا جِيرَانًا يَشْرَبُونَ وَيَفْعَلُونَ، أَفَنَرْفَعُهُمْ إِلَى الإِمَامِ؟ قَالَ: لاَ، سَمِعْتُ رَسُولَ اللهِ صلى الله عليه وسلم يَقُولُ: مَنْ رَأَى مِنْ مُسْلِمٍ عَوْرَةً فَسَتَرَهَا، كَانَ كَمَنْ أَحْيَا مَوْءُودَةً مِنْ قَبْرِهَا.
also referenced under: Hadith 758 (Reference) & Book 33, Hadith 5 (In-Book)