Nafi' (may Allah have mercy on him) narrates from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) recited Surah al-Najm, then prostrated and prolonged the prostration. The people were very many, so they were prostrating on one another's backs.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5628