"We used to greet the Prophet ﷺ with salam and he would return our salam, until we came back from the land of Ethiopia. I greeted him with salam and he did not return my greeting,a nd I started to wonder why. So I sat down; and when he finished praying, he said: 'Allah (SWT) decrees what He wills, and He has decreed what we should not speak during the prayer.'"  

كُنَّا نُسَلِّمُ عَلَى النَّبِيِّ ﷺ فَيَرُدُّ عَلَيْنَا السَّلاَمَ حَتَّى قَدِمْنَا مِنْ أَرْضِ الْحَبَشَةِ فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَىَّ فَأَخَذَنِي مَا قَرُبَ وَمَا بَعُدَ فَجَلَسْتُ حَتَّى إِذَا قَضَى الصَّلاَةَ قَالَ إِنَّ اللَّهَ ﷻ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَإِنَّهُ قَدْ أَحْدَثَ مِنْ أَمْرِهِ أَنْ لاَ يُتَكَلَّمَ فِي الصَّلاَةِ  

We used to salute during prayer and talk about our needs. I came to the Messenger of Allah ﷺ and found him praying. I saluted him, but he did not respond to me. I recalled what happened to me in the past and in the present. When the Messenger of Allah ﷺ finished his prayer, he said to me: Allah, the Almighty, creates new command as He wishes, and Allah, the Exalted, has sent a fresh command that you must not talk during prayer. He then returned my salutation.  

كُنَّا نُسَلِّمُ فِي الصَّلاَةِ وَنَأْمُرُ بِحَاجَتِنَا فَقَدِمْتُ عَلَى رَسُولِ اللَّهِ ﷺ وَهُوَ يُصَلِّي فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَىَّ السَّلاَمَ فَأَخَذَنِي مَا قَدُمَ وَمَا حَدُثَ فَلَمَّا قَضَى رَسُولُ اللَّهِ ﷺ الصَّلاَةَ قَالَ إِنَّ اللَّهَ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَإِنَّ اللَّهَ جَلَّ وَعَزَّ قَدْ أَحْدَثَ مِنْ أَمْرِهِ أَنْ لاَ تَكَلَّمُوا فِي الصَّلاَةِ فَرَدَّ عَلَىَّ السَّلاَمَ  

"We used to greet the Prophet ﷺ with salam and he would return our salam, until we came back from the land of Ethiopia. I greeted him with salam and he did not return my greeting,a nd I started to wonder why. So I sat down; and when he finished praying, he said: 'Allah (SWT) decrees what He wills, and He has decreed what we should not speak during the prayer.'" (Using translation from Nasāʾī 1221)   

كُنَّا نُسَلِّمُ عَلَى النَّبِيِّ ﷺ إِذْ كُنَّا بِمَكَّةَ قَبْلَ أَنْ نَأْتِيَ أَرْضَ الْحَبَشَةِ فَلَمَّا قَدِمْنَا مِنْ أَرْضِ الْحَبَشَةِ أَتَيْنَاهُ فَسَلَّمْنَا عَلَيْهِ فَلَمْ يَرُدَّ فَأَخَذَنِي مَا قَرُبَ وَمَا بَعُدَ حَتَّى قَضَوْا الصَّلَاةَ فَسَأَلْتُهُ فَقَالَ إِنَّ اللهَ ﷻ يُحْدِثُ فِي أَمْرِهِ مَايَشَاءُ وَإِنَّهُ قَدْ أُحْدِثَ مِنْ أَمْرِهِ أَنْ لَا نَتَكَلَّمَ فِي الصَّلَاةِ  

[Machine] Abdullah, we used to greet the Prophet ﷺ and he would respond to us during prayer. But when we came from the land of Abyssinia, I greeted him and he didn't reply. He grabbed me and held me tightly until he finished praying. I said to him, "You used to respond to us." He ﷺ said, "Indeed, Allah speaks whatever He wills, and He has ordained that you do not speak during prayer."  

عَبْدُ اللَّهِ كُنَّا نُسَلِّمُ عَلَى النَّبِيِّ ﷺ فَيَرُدُّ عَلَيْنَا يَعْنِي فِي الصَّلَاةِ فَلَمَّا أَنْ جِئْنَا مِنْ أَرْضِ الْحَبَشَةِ سَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَيَّ فَأَخَذَنِي مَا قَرُبَ وَ بَعُدَ فَجَلَسْتُ حَتَّى قَضَى الصَّلَاةَ قُلْتُ لَهُ إِنَّكَ كُنْتَ تَرُدُّ عَلَيْنَا فَقَالَ ﷺ «إِنَّ اللَّهَ يُحْدِثُ مَا شَاءَ وَقَدْ أَحْدَثَ مِنْ أَمْرِهِ قَضَاءً أَنْ لَا تَكَلَّمُوا فِي الصَّلَاةِ»  

[Machine] We used to greet the Prophet ﷺ while he was in prayer, and he would respond to us before we reached the land of Habasha. So when we returned from beside Najashi, I went to him while he was praying and greeted him, but he did not respond to my greeting. He caught hold of me, both near and far, and I sat waiting for him. When he finished the prayer, I said, "O Messenger of Allah, I greeted you while you were praying, and you did not respond to my greeting." He replied, "Verily, Allah speaks to me whenever He wills, and He has commanded us not to speak in prayer."  

كُنَّا نُسَلِّمُ عَلَى النَّبِيِّ ﷺ وَهُوَ فِي الصَّلَاةِ فَيَرُدُّ عَلَيْنَا قَبْلَ أَنْ نَأْتِيَ أَرْضَ الْحَبَشَةِ فَلَمَّا رَجَعْنَا مِنْ عِنْدِ النَّجَاشِيِّ أَتَيْتُهُ وَهُوَ يُصَلِّي فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَيَّ السَّلَامَ فَأَخَذَنِي مَا قَرُبَ وَمَا بَعُدَ فَجَلَسْتُ أَنْتَظِرُهُ فَلَمَّا قَضَى الصَّلَاةَ قُلْتُ يَا رَسُولَ اللَّهِ سَلَّمْتُ عَلَيْكَ وَأَنْتَ تُصَلِّي فَلَمْ تَرُدَّ عَلَيَّ السَّلَامَ * فَقَالَ «إِنَّ اللَّهَ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَقَدْ أَحْدَثَ أَنْ لَا نَتَكَلَّمَ فِي الصَّلَاةِ»  

We used to salute during prayer and talk about our needs. I came to the Messenger of Allah ﷺ and found him praying. I saluted him, but he did not respond to me. I recalled what happened to me in the past and in the present. When the Messenger of Allah ﷺ finished his prayer, he said to me: Allah, the Almighty, creates new command as He wishes, and Allah, the Exalted, has sent a fresh command that you must not talk during prayer. He then returned my salutation. (Using translation from Abū Dāʾūd 924)   

كُنَّا نُسَلِّمُ فِي الصَّلَاةِ وَنَأْمُرُ بِحَاجَتِنَا فَقَدِمْتُ عَلَى رَسُولِ اللهِ ﷺ وَهُوَ يُصَلِّي فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَيَّ السَّلَامَ فَأَخَذَنِي مَا قَدُمَ وَمَا حَدُثَ فَلَمَّا قَضَى رَسُولُ اللهِ ﷺ الصَّلَاةَ قَالَ إِنَّ اللهَ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَإِنَّ اللهَ قَدْ أَحْدَثَ أَنْ لَا تَكَلَّمُوا فِي الصَّلَاةِ فَرَدَّ عَلَيَّ السَّلَامَ  

[Machine] We used to converse during prayer and greet each other, and one of us would nod indicating a need. So, one day I came while the Prophet ﷺ was praying and I greeted him, but he did not respond. He grabbed me by my clothes and informed me of what had happened and what was said. When he finished, he said, "Indeed, Allah ﷻ speaks of His affairs as He pleases, and He has informed us that we should not talk during prayer."  

كُنَّا نَتَكَلَّمُ فِي الصَّلَاةِ وَيُسَلِّمُ بَعْضُنَا عَلَى بَعْضٍ وَيُومِئُ أَحَدُنَا بِالْحَاجَةِ قَالَ فَجِئْتُ ذَاتَ يَوْمٍ وَالنَّبِيُّ ﷺ يُصَلِّي فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ فَأَخَذَنِي مَا قَدُمَ وَمَا حَدُثَ فَلَمَّا فَرَغَ قَالَ إِنَّ اللهَ ﷻ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَإِنَّهُ قَدْ أَحْدَثَ أَنْ لَا تَكَلَّمُوا فِي الصَّلَاةِ  

"كُنَّا نُسَلِّمُ عَلَى النَّبِىِّ ﷺ وَهُوَ فِى فَأخَذَنى الصَّلَاة، فَيَرُدُّ عَلَيْنَا، فَلَمَّا جئْتُ منْ أَرْضِ الْحَبَشَةِ سَلَّمْتُ عَلَيْهِ، فَلَمْ يَرُدَّ عَلَىَّ، فَأَحْزَنِّى مَا تَقَدَّمَ وَمَا تَأَخَّرَ، ثُمَّ انْتَظَرْتُهُ، فَلَمَّا قَضَى صَلَاتَهُ، ذَكَرْتُ ذَلِكَ لَهُ، فَقَالَ: إِنَّ الله يُحْدثُ منْ أَمْرِهِ يُسْرًا، وَمَا لَنا وَأَنَّهُ قَدْ قَضَى، - أَو قَالَ أَحْدَثَ - أَنْ لا تَكَلَّمُوا فِى الصَّلَاةِ".