Is equating one's wife to the back of another man considered Zihar (pronouncement of immolation)?

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One narration holds that equating a wife to the back of the husband's father, the back of another man, or stating, 'You are to me as the back of a beast,' or, 'You are to me like carrion (Maytah) and blood,' constitutes Zihar. Ahmad affirmed this, stating the back of a man is forbidden and thus constitutes Zihar. Ibn al-Qasim, a companion of Malik, held this view regarding the statement, 'You are to me as the back of my father.' This view is also narrated from Jabir ibn Zayd.