Fiqh-us-Sunnah Volume 1, Purification and Prayer, Fiqh 1.138.

This may be done in any of the following manners: Said Al-Hussain, “In the fighting at Khorasan we had three hundred companions with us, and one of them would lead the prayer, recite some verses from the Qur’an and then bow.” It is related that Ibn ‘Abbas would recite al-Fatihah and some verses from al-Baqarah in every rak’ah. (Related by ad-Daraqutni with a strong chain.) Al-Baihaqi narrates from ‘Abdullah ibn as-Sa’ib that the Prophet, upon whom be peace, recited al-Mu’minun in the morning prayer, and when he came to the part which refers to Moses, Aaron or Jesus, he would cough and bow.” ‘Umar read in the first rak’ah 120 verses from the seven long surahs (Mathnawi). Al-Ahnaf read al-Kahfin the first rak’ah and Yunus or Yusufin the second, and said that he prayed the morning prayer with ‘Umar (and he recited them). Ibn Mas’ud read forty verses from al-Anfal in the first rak’ah and a surah from the ten short surahs (Mufassil) in the second. Qatadah reported about a person who read one surah in two rak’ah or repeated the same surah twice, and then commented: ‘It is all the Book of Allah.” ‘Ubaidullah ibn Thabit related that Anas said, “One of the helpers (Ansar) led the people in prayer at (the mosque) of Quba’. Before he began his recitation he would always recite, ‘Say: He is Allah, the One,’ until he finished that surah, and then he would recite another surah. He did that in every rak’ah. They said to him, ‘You begin with that surah, but we don’t find it sufficient until you add another surah to it?’ He said, ‘I will not stop doing so. I like to lead you in the prayer with that. If you don’t like it, I will leave (leading you in the prayers).’ They thought that he was the best among them, so they didn’t want someone else to lead them. They referred the matter to the Prophet, upon whom be peace, and he said, ‘O so and so, what has kept you from doing what your companions have asked you? Why do you keep reciting that surah in every rak’ah?’ He said, ‘I love that surah.’ The Prophet, upon whom be peace, said, ‘Your love for that surah will cause you to enter Paradise.” A man from the tribe of Juhinah reported that he heard the Prophet, upon whom be peace, recite, “When the earth quakes,” in the morning prayer in both rak’ah. And the man said, “I do not know if he forgot that he had recited it or if he did it on purpose.” This hadith is related by Abu Dawud. The chain has nothing in it that can be criticized.