Sayyiduna Abdullah bin Amr (may Allah be pleased with him) reports this saying of the Prophet (peace and blessings be upon him): "I have been given the strength of forty men in grip and in intimacy." (Allamah al-Haythami says:) I say: After this he mentioned the whole hadith; this long hadith has already preceded in the Book of Marriage. Its chain contains al-Mughirah bin Qays, who is da'if (weak).