Sa`d said, "I used to pray with them a prayer similar to that of Allah's Messenger (ﷺ) (the prayer of Zuhr and `Asr) reducing nothing from them. I used to prolong the first two rak`at and shorten the last two rak`at." `Umar said to Sa`d "This was what we thought about you."
Sahih al-Bukhari Book 10, Hadith 152
← Previous Hadith Allah's Messenger (ﷺ) entered the mosque and a person followed him. The man prayed and went to the Prophet and greeted him. The Prophet (ﷺ) returned the greeting and said to him, "Go back and pray, for you have not prayed." The man went back prayed in the same way as before, returned and greeted the Prophet who said, "Go back and pray, for you have not prayed." This happened thrice. The man said, "By Him Who sent you with the Truth, I cannot offer the prayer in a better way than this. Please, teach me how to pray." The Prophet (ﷺ) said, "When you stand for Prayer say Takbir and then recite from the Holy Qur'an (of what you know by heart) and then bow till you feel at ease. Then raise your head and stand up straight, then prostrate till you feel at ease during your prostration, then sit with calmness till you feel at ease (do not hurry) and do the same in all your prayers.

Sahih al-Bukhari Book 10, Hadith 151 Next Hadith → My father said, "The Prophet (ﷺ) in Zuhr prayers used to recite Al-Fatiha along with two other Suras in the first two rak`at: a long one in the first rak`a and a shorter (Sura) in the second, and at times the verses were audible. In the `Asr prayer the Prophet (ﷺ) used to recite Al-Fatiha and two more Suras in the first two rak`at and used to prolong the first rak`a. And he used to prolong the first rak`a of the Fajr prayer and shorten the second.

Sahih al-Bukhari Book 10, Hadith 153