(1) باب فَرْضِ الْحَجِّ
Narrated Aqra' ibn Habib:
Ibn Abbas said: Aqra' ibn Habis asked the Prophet (ﷺ) saying: Messenger of Allah hajj is to be performed annually or only once? He replied: Only once, and if anyone performs it more often, he performs a supererogatory act.Abu Dawud said: The narrator Abu Sinan is Abu Sinan al-Du'wail. The same has been reported by both 'Abd al-Jalil bin Humaid and Sulaiman bin Kathir from al-Zuhri. The narrator 'Uqail reported the name "Sinan".
Reference: Sunan Abi Dawud 1721
In-book reference: Book 11, Hadith 1
English translation: Book 10, Hadith 1717