(1) باب تَفْرِيعِ أَبْوَابِ السُّجُودِ وَكَمْ سَجْدَةٍ فِي الْقُرْآنِ
Narrated Uqbah ibn Amir:
I said to the Messenger of Allah (ﷺ): Are there two prostrations in Surah al-Hajj? He replied: Yes; if anyone does not make two prostrations, he should not recite them. (RU)
Reference (RU): Sunan Abi Dawud 1402 (RU)
In-book reference (RU): Book 7, Hadith 2 (RU)
English translation (RU): Book 7, Hadith 1397 (RU)