The Messenger of Allah (ﷺ) said: "Glorify your Lord in Ruku' (bowing posture) and exert yourself in supplication in prostration. Thus your supplications are liable to be accepted."[Muslim].

A man entered the mosque while Allah's Messenger (ﷺ) was sitting in one side of the mosque. The man prayed, came, and greeted the Prophet. Allah's Messenger (ﷺ) said to him, "Wa 'Alaikas Salam (returned his greeting). Go back and pray as you have not prayed (properly)." The man returned, repeated his prayer, came back and greeted the Prophet. The Prophet (ﷺ) said, "Wa alaika-s-Salam (returned his greeting). Go back and pray again as you have not prayed (properly)." The man said at the second or third time, "O Allah's Messenger (ﷺ)! Kindly teach me how to pray". The Prophet (ﷺ) said, "When you stand for prayer, perform ablution properly and then face the Qibla and say Takbir (Allahu-Akbar), and then recite what you know from the Qur'an, and then bow with calmness till you feel at ease then rise from bowing, till you stand straight, and then prostrate calmly (and remain in prostration) till you feel at ease, and then raise (your head) and sit with calmness till you feel at ease and then prostrate with calmness (and remain in prostration) till you feel at ease, and then raise (your head) and sit with calmness till you feel at ease in the sitting position, and do likewise in whole of your prayer." And Abu Usama added, "Till you stand straight." (See Hadith No. 759, Vol.1)

The Messenger of Allah (ﷺ) said, "A slave becomes nearest to his Rubb when he is in prostration. So increase supplications while prostrating."[Muslim].

A man entered the mosque and started praying while Allah's Messenger (ﷺ) was sitting somewhere in the mosque. Then (after finishing the prayer) the man came to the Prophet (ﷺ) and greeted him. The Prophet (ﷺ) said to him, "Go back and pray, for you have not prayed. The man went back, and having prayed, he came and greeted the Prophet. The Prophet (ﷺ) after returning his greetings said, "Go back and pray, for you did not pray." On the third time the man said, "(O Allah's Messenger (ﷺ)!) teach me (how to pray)." The Prophet said, "When you get up for the prayer, perform the ablution properly and then face the Qibla and say Takbir (Allahu Akbar), and then recite of what you know of the Qur'an, and then bow, and remain in this state till you feel at rest in bowing, and then raise your head and stand straight; and then prostrate till you feel at rest in prostration, and then sit up till you feel at rest while sitting; and then prostrate again till you feel at rest in prostration; and then get up and stand straight, and do all this in all your prayers."

I performed Salat with the Prophet (ﷺ) one night, and he started reciting Surat Al- Baqarah. I thought that he would go in Ruku' (bowing posture in Salat) at the end of one hundred Ayat, but he continued (reciting); and I thought that he would perhaps recite (this Surah) in the whole Rak'ah (prayer), but he continued the recitation; I thought he would perhaps bow on completing (this Surah). He (ﷺ) then started reciting Surat An-Nisa' which he followed with Surat Al-Imran. He recited leisurely. When he recited an Ayah which mentioned the tasbeeh, he would say Subhan Allah and when he recited the Ayah which tells how the Rubb is to be asked, the Messenger of Allah (ﷺ) would then ask from Him; and when he (ﷺ) recited an Ayah asking one to seek Protection Allah, he would seek Protection of Allah. Then he bowed and said, "Subhana Rabbiyal-Azim (My Rubb the Great is free from imperfection)"; his bowing lasted about the same length of time as his standing, (and then on returning to the standing posture after Ruku') he would say, "Sami' Allahu liman hamidah, Rabbana lakal-hamd (Allah listens to him who praises Him. Praise be to You, Our Rubb!)," and he would then stand about the same length of time as he had spent in bowing. He would then prostrate himself and say, "Subhana Rabbiyal-A'la (My Rubb the Supreme is free from imperfection)," and his prostration lasted nearly the same length of time as his standing (Qiyam).[Muslim].

The Messenger of Allah (ﷺ) said, "A slave becomes nearest to his Rubb when he is in prostration. So increase supplications in prostrations."[Muslim].

The Messenger of Allah (ﷺ) said, "The angels supplicate in favour of one of you so long as he remains in the place where he has performed Salat (prayer) in a state of Wudu'. They (the angels) say: 'O Allah! Forgive him, O Allah! Have mercy on him."'[Al- Bukhari].

I offered Salat (Tahajjud - optional night prayer) with the Prophet (ﷺ) one night, and he started reciting (Surat) Al-Baqarah. I thought that he would bow at the end of one hundred Verses, but he continued reciting; I, then, thought that he would perhaps recite the whole (Surah) in a Rak'ah, but he proceeded on, and I thought he would perhaps bow on completing (this Surah); he then started (reciting Surat) An-Nisa'; he then started (Surat) Al-'Imran and his recitation was unhurried. And when he recited the Verses which referred to the Glory of Allah, he glorified Him (by saying Subhan Allah - My Rubb, the Supreme is far removed from every imperfection), the Great, and when he recited the Verses that mention supplication, he supplicated, and when he recited the Verses that mention seeking Refuge of the Rubb, he sought (His) Refuge. Then he bowed and said: "My Rubb, the Supreme is far removed from every imperfection (Subhana Rabbiyal-Azim);" his bowing lasted about the same length of time as his standing (and then on returning to the standing posture after Ruku') he said: "Allah listened to him who praised Him (Sami' Allahu liman hamidah, Rabbana wa lakal hamd)." Then he stood about the same length of time as he had spent in bowing. He then prostrated himself and said: "My Rubb, the Supreme is far removed from every imperfection (Subhana Rabbiyal-A'la)," and his prostration lasted nearly the same length of time as his standing.[Muslim].