Sunan an-Nasa'i, Book 26, Hadith 19 (In-Book) ⓘ
Narrated Samurah bin Jundab: It was narrated from Samurah bin Jundab that the Prophet forbade celibacy. Abu Abdur-Rahman said: Qatadah is more reliable and better preserves narrations than Ash'ath but the hadith of Ash'ath (here) appears to be the correct one. Allah, Most High, knows best.
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا مُعَاذُ بْنُ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ بْنِ جُنْدُبٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم . أَنَّهُ نَهَى عَنِ التَّبَتُّلِ . قَالَ أَبُو عَبْدِ الرَّحْمَنِ قَتَادَةُ أَثْبَتُ وَأَحْفَظُ مِنْ أَشْعَثَ وَحَدِيثُ أَشْعَثَ أَشْبَهُ بِالصَّوَابِ وَاللَّهُ تَعَالَى أَعْلَمُ .
also referenced under: Hadith 3214 (Reference) & Volume 4, Book 26, Hadith 3216 (DarusSalam)