Thinking of something during As-Salat (the prayer)

Narrated 'Uqba bin Al-Harith:

I offered the 'Asr prayer with the Prophet 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."

حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، حَدَّثَنَا رَوْحٌ، حَدَّثَنَا عُمَرُ ـ هُوَ ابْنُ سَعِيدٍ ـ قَالَ أَخْبَرَنِي ابْنُ أَبِي مُلَيْكَةَ، عَنْ عُقْبَةَ بْنِ الْحَارِثِ ـ رضى الله عنه ـ قَالَ 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 ".

Narrated Abu Huraira,

Allah's Apostle 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 Muadh-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 'Abdur-Rahman said, "If anyone of you has such a thing (forgetting the number of Rakat he has prayed) he should perform two prostrations of Sahu (i.e. forgetfulness) while sitting." Abu Salama narrates this from Abu Huraira.

حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ جَعْفَرٍ، عَنِ الأَعْرَجِ، قَالَ قَالَ أَبُو هُرَيْرَةَ ـ رضى الله عنه ـ 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 ـ رضى الله عنه.