Mishkat al-Masabih 1025
Ibn ‘Umar said:
God’s Messenger was reciting as-Sajda (Al-Qur’an; 32) when we were with him. He was prostrating himself and we were doing so along with him, but we were so crowded that none of us could find a place for his forehead when prostrating himself. 

(Bukhari and Muslim.)
وَعَنِ ابْنِ عُمَرَ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقْرَأُ (السَّجْدَةَ)
وَنَحْنُ عِنْدَهُ فَيَسْجُدُ وَنَسْجُدُ مَعَهُ فَنَزْدَحِمُ حَتَّى مَا يَجِدُ أَحَدُنَا لِجَبْهَتِهِ مَوْضِعًا يَسْجُدُ عَلَيْهِ