The Messenger of Allah ﷺ said, "Allah is not shy of the truth. Do not approach women in their backsides."
حدثنا عبد الله بن يزيد حدثنا حيوة وابن لهيعة قالا ثنا حسان مولى محمد بن سهل عن سعيد بن أبي هلال عن عبد الله بن علي عن هرمي بن عمرو الخطمي
أن رسول الله ﷺ قال إن الله لا يستحي من الحق لا تأتوا النساء في أدبارهن
Its isnad is hasan, due to Ibn Lahia and due to Harmi bin Amr Khatmi, who was mentioned earlier under the name Harmi bin Abdullah. Narrators have made errors regarding Abdullah bin Harmi, though he is one and the same person, and he is mastur (of unknown reliability). Likewise Hassan, he is Ibn Abdullah Umawi, their client, and he is maqbul (acceptable). The hadith was mentioned earlier at 21755.