Abu Hurairah narrated that : the Prophet said "When the Imam says 'Amin' then (all of you) say 'Amin.' For whoever's 'Amin' concurs with the 'Amin' of the angels, then his past sins will be forgiven."
Al-Hasan narrated that : Samurah said: "there are two pauses that I preserved from Allah's Messenger." But Imran bin Husain rejected that and said: "We preserved one pause." "So we wrote to Ubayy bin Ka'b in Al-Madinah. Ubayy wrote that Samurah was correct." Sa'eed said: "We said to Qatadah: 'What are those two pauses?' He said: 'When he entered into his Salat, and when he finished his recitation.' Then he (Qatadah) said after that: 'And when he recited (Nor those who went astray.)' And he said: 'He liked to pause when he finished the recitation until he caught his breath.'"
Abdullah bin Mas'ud narrated: "Allah's Messenger would say the Takbir for every lowering and raising, standing and sitting, and (so did) Abu Bakr and Umar."
Hadiths 254https://sunnah.com/tirmidhi:254
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُنِيرٍ الْمَرْوَزِيُّ، قَالَ سَمِعْتُ عَلِيَّ بْنَ الْحَسَنِ، قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ، عَنِ ابْنِ جُرَيْجٍ، عَنِ الزُّهْرِيِّ، عَنْ أَبِي بَكْرِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يُكَبِّرُ وَهُوَ يَهْوِي . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَهُوَ قَوْلُ أَهْلِ الْعِلْمِ مِنْ أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم وَمَنْ بَعْدَهُمْ مِنَ التَّابِعِينَ قَالُوا يُكَبِّرُ الرَّجُلُ وَهُوَ يَهْوِي لِلرُّكُوعِ وَالسُّجُودِ .
Abu Hurairah narrated: "Allah's Messenger would say the Takhir while he was going down."
Salim narrated from : his father (Ibn Umar) who said: "I saw Allah's Messenger when he opened the Salat, raising his hands to the level of his shoulders, and (again) when he bowed, and when he raised his head from bowing." In his narration, Ibn Abi Umar added: "And he wuld not raise them between the two prostrations."
Alqamah narrated that : Abdullah bin Mas'ud said: "Shall I not demonstrate the Salat of Allah's Messenger to you?" Then he offered Salat and he did not raise his hands except while saying the first Takbir."
Abu Abdur-Rahman As-Sulami said: "Umar bin Al-Khattab [may Allah be pleased with him] said to us: 'The knees are the Sunnah for you, so hold the knees.'"
Sa'd bin Abi Waqas said: "We would do that, but then we were prohibited from it, and we were ordered to put our hands on our knees."
Hadiths 260https://sunnah.com/tirmidhi:260
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، بُنْدَارٌ حَدَّثَنَا أَبُو عَامِرٍ الْعَقَدِيُّ، حَدَّثَنَا فُلَيْحُ بْنُ سُلَيْمَانَ، حَدَّثَنَا عَبَّاسُ بْنُ سَهْلِ بْنِ سَعْدٍ، قَالَ اجْتَمَعَ أَبُو حُمَيْدٍ وَأَبُو أُسَيْدٍ وَسَهْلُ بْنُ سَعْدٍ وَمُحَمَّدُ بْنُ مَسْلَمَةَ فَذَكَرُوا صَلاَةَ رَسُولِ اللَّهِ صلى الله عليه وسلم . فَقَالَ أَبُو حُمَيْدٍ أَنَا أَعْلَمُكُمْ بِصَلاَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَكَعَ فَوَضَعَ يَدَيْهِ عَلَى رُكْبَتَيْهِ كَأَنَّهُ قَابِضٌ عَلَيْهِمَا وَوَتَّرَ يَدَيْهِ فَنَحَّاهُمَا عَنْ جَنْبَيْهِ . قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ . قَالَ أَبُو عِيسَى حَدِيثُ أَبِي حُمَيْدٍ حَدِيثٌ حَسَنٌ صَحِيحٌ . وَهُوَ الَّذِي اخْتَارَهُ أَهْلُ الْعِلْمِ أَنْ يُجَافِيَ الرَّجُلُ يَدَيْهِ عَنْ جَنْبَيْهِ فِي الرُّكُوعِ وَالسُّجُودِ .
Abbas bin Sahl [bin Sa'd] narrated: "Abu Humaid, Abu Usaid, Sahl bin Sa'd, and Muhammad bin Maslamah were once together and they were mentioning the Salat of Allah's Messenger. Abu Humaid said: 'I am the most knowledgeable among you of the Salat of Allah's Messenger: Allah's Messenger would bow and place his hands on his knees as if he was grasping them, and he would draw his forearms to hold them away from his sides.'"
Ibn Mas'ud narrated that : the Prophet said: "When one of you bows then says while he is bowing: (Subhana Rabbiyal Azim) 'Glorious is my Lord the Magnificent' three times, then he has completed his bowing. And that is the least of it. And when he prostrates and says while prostrating: (Subhana Rabbiyal A'la) 'Glorious is my Lord the Most High' three times, then he has completed his prostrations, and that is the least of it.'"
Hudhaifah narrated that : he performed Salat with the Prophet, and that while he was bowing he would say: (Subhana Rabbiyal Azim); "Glorious is my Lord the Magnificent" and while prostrating: (Subhana Rabbiyal A'la) 'Glorious is my Lord the Most High.' And he would not recite an Ayah mentioning mercy, except that he would stop and ask (for mercy), and he would not recite an Ayah mentioning punishment, except that he would stop and seek refuge (with Allah from it).
Hadiths 263https://sunnah.com/tirmidhi:263
قَالَ وَحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، عَنْ شُعْبَةَ، نَحْوَهُ . وَقَدْ رُوِيَ عَنْ حُذَيْفَةَ، هَذَا الْحَدِيثُ مِنْ غَيْرِ هَذَا الْوَجْهِ أَنَّهُ صَلَّى بِاللَّيْلِ مَعَ النَّبِيِّ صلى الله عليه وسلم فَذَكَرَ الْحَدِيثَ .
(Another similar narration) This Hadith has been narrated from Hudhaifah : from another route: "That he performed Salat during the night with the Prophet" and he mentioned the Hadith.
Ali bin Abi Talib narrated: "The Prophet prohibited wearing Qassi, and that which is dyed with safflower, and from the gold ring, and from reciting the Quran while bowing."
Abu Mas'ud Al-Ansari [Al-Badri] narrated that : Allah's Messenger said: "The Salat is not acceptable if a man is not at rest - meaning his back - while bowing and prostrating."
Ali bin Abi Talib narrated: "When Allah's Messenger would raise his head from bowing he would say: (Sami Allahi liman hamidal. Rabba na lakal-hamd, mil'as-samawati wa mil'al-ardi wa mil'a ma bainahuma wa mil'a ma shi'ia min shay'in ba'd) 'Allah listens to those who praise Him. O our Lord! And to You is the praise that fills the heavens and fills the earth, and fills what is between them, and fills whatever there is beyond that You will.' He said: There are narrations on this topic from Ibn Umar, Ibn Abbas, Ibn Abi Awfa, Abu Juhaifa, and Abu Sa'eed.
Abu Hurairah narrated that : Allah's Messenger said: "When the Imam says: (Sami Allahu liman hamidah) 'Allah listens to those who praise Him. Then (all of you) say: (Rabbana wa lakal-hamd) 'O our Lord! And to You is the praise for whoever's saying concurs with the saying of the angels, then his past sins will be forgiven."
Wa'il bin Hujr narrated: "I saw Allah's Messenger when he prostrated placing his knees (on the ground) before his hands, and when he got up, he raised his hands before his knees."