You almost did not finish until the sun had risen." He replied: "If it had risen, it would have found us not in a state of heedlessness." [The Prophet (peace and blessings of Allah be upon him) recited the surah Al-Mu'minun, and when he reached the mention of Isa (Jesus), he was seized by a choking sensation (shariqah), so he bowed.] (25).

There is also no harm (26) in reciting part of a surah in a rak'ah, due to what we have narrated [from the hadiths, which include that, and Ahmad explicitly stated this and cited as evidence what he narrated with his chain of authority] (27) from Ibn Abza who said: I prayed behind Umar, and he recited the surah Yusuf until he reached: {And his eyes became white with grief} (28); he was overcome by weeping and bowed. Then he recited the surah Al-Najm and prostrated during it, then stood and recited: {Idha zulzilat}.

And because if it is permissible to limit oneself to reciting one verse [of a surah] (27), then it is [considered] part of the surah.

Section: Ahmad was asked about a man who recites a surah in a rak'ah, then stands and recites it in the other rak'ah. He said: "What is the harm in that?" [Al-Najjad narrated, with his chain of authority] (29) from Abu al-Huwayrith: That the Prophet (peace and blessings of Allah be upon him) prayed Maghrib, recited the Mother of the Book (Al-Fatiha), and recited with it "Idha zulzilat." Then he stood and recited in the second [rak'ah] the Mother of the Quran (Al-Fatiha) and also recited "Idha zulzilat." It was [also] narrated by Abu Dawud (30) [from the Prophet (peace and blessings of Allah be upon him). We have narrated from the hadith of Al-Bukhari (31): That a man used to recite in every rak'ah {Say: He is Allah, [who is] One}. This was brought up to the Prophet (peace and blessings of Allah be upon him), and he approved it.] (32)