Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) narrates: I heard the Prophet (peace and blessings be upon him) say: "No man should lie in bodily contact with another man under a single garment, and no woman should lie in bodily contact with another woman under a single garment (that is, they should not be together in such a way that there is only one garment over their bodies and nothing else on them)." The narrator says: I asked Sayyiduna Jabir (may Allah be pleased with him): "Did you people regard committing sins as shirk (associating partners with Allah)?" He replied: "Allah forbid!"
Ahmad recorded it, and al-Tabarani recorded it in al-Mu'jam al-Awsat in abridged form. Its chain contains Abd al-Rahman bin Abi al-Zinad, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدب / 13191