Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: I saw Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) prostrate in Surah al-Najm during the Fajr prayer, and then he began another surah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3762
Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: When the prostration is at the end of the surah, then if one wishes he may bow, and if he wishes he may prostrate.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3763
Al-Aswad (may Allah have mercy on him) narrates from Sayyiduna Abdullah (may Allah be pleased with him) concerning a man who recites, in prayer, a surah at the end of which there is a prostration: if he wishes he may bow, and if he wishes he may prostrate. Then he should stand up, recite, bow and prostrate.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3764
(a) Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrated: Two men who are better than me narrated to me, one of Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) or Sayyiduna Umar al-Faruq (may Allah be pleased with him); (the narrator) said: "I do not remember which of them told me." One of them prostrated in Surah al-Inshiqaq and Surah al-Alaq.
(b) When Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) recited Surah al-Najm with the people he would prostrate, and also when he recited it in the prayer (he would prostrate). When Sayyiduna Ibn Umar (may Allah be pleased with them both) joined some other part of the Qur'an to it, he would prostrate, and if he did not join any other part to it, he would bow.
(c) When Sayyiduna Uthman bin Affan (may Allah be pleased with him) recited it, he would prostrate, then rise from the prostration and recite Surah al-Tin or a surah similar to it.
(d) He said that the Prophet (peace and blessings be upon him) also prostrated with it; and in the hadith of al-Birti it is: "if not the Prophet (peace and blessings be upon him), or Sayyiduna Umar bin al-Khattab (may Allah be pleased with him)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3765