"When Messenger of Allah sat for the first two Rak'ah it was as if he was on hot stones." Shu'bah (one of the narrators) said: "Then Sa'd's lips moved (saying) something. So I said: 'Until he stood?' He said: 'Until he stood.'"  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا جَلَسَ فِي الرَّكْعَتَيْنِ الأُولَيَيْنِ كَأَنَّهُ عَلَى الرَّضْفِ قَالَ شُعْبَةُ ثُمَّ حَرَّكَ سَعْدٌ شَفَتَيْهِ بِشَيْءٍ فَأَقُولُ حَتَّى يَقُومَ فَيَقُولُ حَتَّى يَقُومَ