Sunan Abi Dawud 1420
سنن أبي داود#1420SahihNarrated Ubadah ibn as-Samit: Ibn Muhayriz said: A man from Banu Kinanah, named al-Makhdaji, heard a person called AbuMuhammad in Syria, saying: The witr is a duty (wajib). Al-Makhdaji said: So I went to Ubadah ibn as-Samit and informed him. Ubadah said: AbuMuhammad told a lie. I heard the Messenger of Allah (ﷺ) say: There are five prayers which Allah has prescribed on His servants. If anyone offers them, not losing any of them, and not treating them lightly, Allah guarantees that He will admit him to Paradise. If anyone does not offer them, Allah does not take any responsibility for such a person. He may either punish him or admit him to Paradise
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
In-book reference: 8:5