I offered the ʿAsr prayer with the Prophet ﷺ and after finishing the prayer with Taslim he got up quickly and went to some of his wives and then came out. He noticed the signs of astonishment on the faces of the people caused by his speed. He then said, "I remembered while I was in my prayer that a piece of gold was Lying in my house and I disliked that it should remain with us throughout the night, and so I have ordered it to be distributed."  

صَلَّيْتُ مَعَ النَّبِيِّ ﷺ الْعَصْرَ فَلَمَّا سَلَّمَ قَامَ سَرِيعًا دَخَلَ عَلَى بَعْضِ نِسَائِهِ ثُمَّ خَرَجَ وَرَأَى مَا فِي وُجُوهِ الْقَوْمِ مِنْ تَعَجُّبِهِمْ لِسُرْعَتِهِ فَقَالَ ذَكَرْتُ وَأَنَا فِي الصَّلاَةِ تِبْرًا عِنْدَنَا فَكَرِهْتُ أَنْ يُمْسِيَ أَوْ يَبِيتَ عِنْدَنَا فَأَمَرْتُ بِقِسْمَتِهِ  

Messenger of Allah ﷺ said, "When the Adhan for the prayer is pronounced, then Satan takes to his heels passing wind so that he may not hear the Adhan and when the Mu'adh-dhin finishes, he comes back; and when the Iqama is pronounced he again takes to his heels and when it is finished, he again comes back and continues reminding the praying person of things that he used not to remember when not in prayer till he forgets how much he has prayed." Abu Salama bin ʿAbdur-Rahman said, "If anyone of you has such a thing (forgetting the number of rakʿat he has prayed) he should perform two prostrations of Sahu (i.e. forgetfulness) while sitting." Abu Salama narrates this from Abu Huraira.  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا أُذِّنَ بِالصَّلاَةِ أَدْبَرَ الشَّيْطَانُ لَهُ ضُرَاطٌ حَتَّى لاَ يَسْمَعَ التَّأْذِينَ فَإِذَا سَكَتَ الْمُؤَذِّنُ أَقْبَلَ فَإِذَا ثُوِّبَ أَدْبَرَ فَإِذَا سَكَتَ أَقْبَلَ فَلاَ يَزَالُ بِالْمَرْءِ يَقُولُ لَهُ اذْكُرْ مَا لَمْ يَكُنْ يَذْكُرُ حَتَّى لاَ يَدْرِي كَمْ صَلَّى قَالَ أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ إِذَا فَعَلَ أَحَدُكُمْ ذَلِكَ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ قَاعِدٌ وَسَمِعَهُ أَبُو سَلَمَةَ مِنْ أَبِي هُرَيْرَةَ ؓ  

People say that I narrate too many narrations of the Prophet; once I met a man (during the lifetime of the Prophet) and asked him, "Which Sura did Messenger of Allah ﷺ s recite yesterday in the ʿIsha' prayer?" He said, "I do not know." I said, "Did you not attend the prayer?" He said, "Yes, (I did)." I said, "I know. He recited such and such Sura."  

أَبُو هُرَيْرَةَ ؓ يَقُولُ النَّاسُ أَكْثَرَ أَبُو هُرَيْرَةَ فَلَقِيتُ رَجُلاً فَقُلْتُ بِمَ قَرَأَ رَسُولُ اللَّهِ ﷺ الْبَارِحَةَ فِي الْعَتَمَةِ فَقَالَ لاَ أَدْرِي فَقُلْتُ لَمْ تَشْهَدْهَا قَالَ بَلَى قُلْتُ لَكِنْ أَنَا أَدْرِي قَرَأَ سُورَةَ كَذَا وَكَذَا