Samurah ibn Jundub and Imran ibn Husayn had a discussion (about the periods of silence in prayer). Samurah then said that he remembered two periods of silence from the Messenger of Allah ﷺ; one when he uttered the takbir and the other when he finished reciting: "Not of those with whom Thou art angry, nor of those who go astray" (i.7). Samurah remembered that, but Imran ibn Husayn rejected it. Then they wrote about it to Ubayy ibn Ka'b. He wrote a letter to them and gave a reply to them that Samurah remembered correctly.  

عَنْ رَسُولِ اللَّهِ ﷺ سَكْتَتَيْنِ سَكْتَةً إِذَا كَبَّرَ وَسَكْتَةً إِذَا فَرَغَ مِنْ قِرَاءَةِ { غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلاَ الضَّالِّينَ } فَحَفِظَ ذَلِكَ سَمُرَةُ وَأَنْكَرَ عَلَيْهِ عِمْرَانُ بْنُ حُصَيْنٍ فَكَتَبَا فِي ذَلِكَ إِلَى أُبَىِّ بْنِ كَعْبٍ وَكَانَ فِي كِتَابِهِ إِلَيْهِمَا أَوْ فِي رَدِّهِ عَلَيْهِمَا أَنَّ سَمُرَةَ قَدْ حَفِظَ  

[Machine] The Prophet ﷺ used to remain silent during his prayer and after finishing recitation. Imran ibn Husain disapproved of this and they wrote to Ubay ibn Ka'b about it, and he wrote back saying that Samurah was telling the truth.  

«كَانَ رَسُولُ اللهِ ﷺ يَسْكُتُ سَكْتَتَيْنِ إِذَا دَخَلَ فِي الصَّلَاةِ وَإِذَا فَرَغَ مِنَ الْقِرَاءَةِ» فَأَنْكَرَ ذَلِكَ عِمْرَانُ بْنُ حُصَيْنٍ فَكَتَبُوا فِي ذَلِكَ إِلَى أُبَيِّ بْنِ كَعْبٍ فَكَتَبَ إِلَيْهِمْ أَنْ صَدَقَ سَمُرَةُ  

[Machine] From the Messenger of Allah ﷺ , there was a pause when he would make takbeer (say "Allahu Akbar") and a pause when he finished reciting the Surah. Imran bin Husain was disturbed by this, so they wrote to Ubay bin Ka'b about it. Ubay wrote back, confirming that Samurah had indeed memorized the narration from the Messenger of Allah ﷺ .  

عَنْ رَسُولِ اللهِ ﷺ سَكْتَةً إِذَا كَبَّرَ وَسَكْتَةً إِذَا فَرَغَ مِنْ قِرَاءَةِ السُّورَةِ» فَعَابَ ذَلِكَ عَلَيْهِ عِمْرَانُ بْنُ حُصَيْنٍ فَكَتَبُوا إِلَى أُبَيِّ بْنِ كَعْبٍ فِي ذَلِكَ فَكَتَبَ أُبَيٌّ صَدَقَ سَمُرَةُ وَيَقُولُ إِنَّ سَمُرَةَ حَفِظَ الْحَدِيثَ عَنْ رَسُولِ اللهِ ﷺ  

[Machine] "Allah's Messenger ﷺ used to pause between two pauses; a pause when he said the takbir (saying Allahu Akbar) and a pause when he finished reciting (the verse) 'Not (the way) of the people upon whom wrath has fallen (who have earned Your anger) nor of those who have gone astray.' (Surah Al-Fatiha, verse 7). Sumrah memorized it, but Imran bin Husain disapproved. So they both wrote to Ubay bin Ka'b about it. It was mentioned in his book or in his response to them that Sumrah had indeed memorized it. Muhammad bin al-Minhal narrated this from Yazid bin Zurai, who said in the hadith: 'A pause when he finishes reciting the Surah without mentioning Al-Fatiha and its meaning.'"  

اللهِ ﷺ سَكْتَتَيْنِ سَكْتَةً إِذَا كَبَّرَ وَسَكْتَةً إِذَا فَرَغَ مِنْ قِرَاءَةِ {غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلَا الضَّالِّينَ} [الفاتحة 7] فَحَفِظَ ذَلِكَ سَمُرَةُ وَأَنْكَرَ عَلَيْهِ عِمْرَانُ بْنُ حُصَيْنٍ فَكَتَبَا فِي ذَلِكَ إِلَى أُبَيِّ بْنِ كَعْبٍ ؓ وَكَانَ فِي كِتَابِهِ إِلَيْهِمَا أَوْ فِي رَدِّهِ عَلَيْهِمَا أَنَّ سَمُرَةَ قَدْ حَفِظَ وَرَوَاهُ مُحَمَّدُ بْنُ الْمِنْهَالِ عَنْ يَزِيدَ بْنِ زُرَيْعٍ فَقَالَ فِي الْحَدِيثِ وَسَكْتَةً إِذَا فَرَغَ مِنْ قِرَاءَةِ السُّورَةِ وَلَمْ يَذْكُرِ الْفَاتِحَةَ وَبِمَعْنَاهُ