Sunan at-Tirmithiy
كتاب الصلاة
باب ما جاء فى تحريم الصلاة وتحليلها
حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا اللَّيْثُ عَنِ ابْنِ شِهَابٍ عَنِ الأَعْرَجِ عَنْ عَبْدِ اللَّهِ ابْنِ بُحَيْنَةَ الأَسَدِىِّ حَلِيفِ بَنِى عَبْدِ الْمُطَّلِبِ أَنَّ النَّبِىَّ صلى الله عليه وسلم قَامَ فِى صَلاَةِ الظُّهْرِ وَعَلَيْهِ جُلُوسٌ فَلَمَّا أَتَمَّ صَلاَتَهُ سَجَدَ سَجْدَتَيْنِ يُكَبِّرُ فِى كُلِّ سَجْدَةٍ وَهُوَ جَالِسٌ قَبْلَ أَنْ يُسَلِّمَ وَسَجَدَهُمَا النَّاسُ مَعَهُ مَكَانَ مَا نَسِىَ مِنَ الْجُلُوسِ. قَالَ وَفِى الْبَابِ عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ.
The Prophet, peace and blessings of God be upon him, stood in the noon prayer[1] when he should have remained sitting. So, when he completed his prayer, before pronouncing the salutation, he prostrated twice from the seated position, saying in each prostration, "God is the greatest," and the people prostrated with him, to replace the [act of] sitting that he had forgotten. Footnotes: [1]: (Thuhr) second prescribed prayer of the day.