It is narrated from Safwan bin Muhriz (may Allah have mercy on him) that Abu Musa (may Allah be pleased with him) made two prostrations in Surah al-Hajj; he recited the verse of prostration that is at the end of Surah al-Hajj, then prostrated, and we prostrated with him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3734