The same narration is also reported through another chain, but in it are the words that he (peace and blessings be upon him) said: "Let him perform two prostrations while sitting, before the salam."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3829
Hadith Gradingمحدثین:صحيح شاذ
Hadith Takhrij«صحيح شاذ۔ قال ابن رجب في الفتح 7/ 225»