Sunan al-Nasāʾī
سُنَنُ النَّسَائِي
One of the nine major ḥadīth collections of the Sunnah which is smaller of the two authored by Nasāʿī. Full name: al-Sunan al-Sughrá (السنن الصغرى) (The Minor Book of Sunnah). Sources: sunnah.com for the Arabic text and English translation. The English translation has been improved by myself and other contributors.
Random ḥadīth in Nasāʾī
"I came to the Prophet [SAW] and said: 'O Prophet of Allah, teach me words by which I may seek refuge (with Allah).' He took me by the hand then said: 'Say: A'udhu bika min sharri sam'i, wa sharri basari, wa sharri lisani, wa sharri qalbi, wa sharri mani (I seek refuge in You from the evil of my hearing, the evil of my seeing, the evil of my tongue, the evil of my heart, and the evil of my sperm),' until I had memorized it." Waki' contradicted him in the wordings.
أَتَيْتُ النَّبِيَّ ﷺ فَقُلْتُ يَا نَبِيَّ اللَّهِ عَلِّمْنِي تَعَوُّذًا أَتَعَوَّذُ بِهِ فَأَخَذَ بِيَدِي ثُمَّ قَالَ قُلْ أَعُوذُ بِكَ مِنْ شَرِّ سَمْعِي وَشَرِّ بَصَرِي وَشَرِّ لِسَانِي وَشَرِّ قَلْبِي وَشَرِّ مَنِيِّي قَالَ حَتَّى حَفِظْتُهَا قَالَ سَعْدٌ وَالْمَنِيُّ مَاؤُهُ خَالَفَهُ وَكِيعٌ فِي لَفْظِهِ