ENOfficial
Khuzaima b. Thabit reported the Prophet (ﷺ) as saying, “God is not ashamed of the truth. Do not have intercourse with women through the anus.” Ahmad, Tirmidhi, Ibn Majah and Darimi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ خُزَيْمَةَ بْنِ ثَابِتٍ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِنَّ اللَّهَ لَا يستحيي مِنَ الْحَقِّ لَا تَأْتُوا النِّسَاءَ فِي أَدْبَارِهِنَّ» . رَوَاهُ أَحْمد وَالتِّرْمِذِيّ وَابْن مَاجَه. والدارمي
sunnah.com