Ibn ‘Umar said:

God’s Messenger was reciting <i>as-Sajda</i> (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