In the transmitted apparent view attributed to Abu Hanifah, prostration on either forehead or nose can suffice, while using both is the complete sunnah posture.
One argument is that prostration is realized through an appropriate part of the face. Sufficiency of the nose alone is nevertheless disputed within Hanafi jurisprudence; the attribution is not a unanimous ruling.
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Ruku, Qawmah, Sujud and the Sitting Between Prostrations
In the transmitted apparent view attributed to Abu Hanifah, prostration on either forehead or nose can suffice, while using both is the complete sunnah posture.
One argument is that prostration is realized through an appropriate part of the face. Sufficiency of the nose alone is nevertheless disputed within Hanafi jurisprudence; the attribution is not a unanimous ruling.