Sayyiduna Khuzaymah bin Thabit (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Allah Almighty is not shy of the truth; do not have intercourse with women in their backsides."
Ibn al-Had shortened its chain and did not mention Abd al-Malik bin Amr in it, and Ibn Uyaynah narrated it from Ibn al-Had and erred in its chain.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14116