Sunan Abi Dawud 1938
سنن أبي داود#1938SahihNarrated Umar ibn al-Khattab: The Arabs in the pre-Islamic period did not return from al-Muzdalifah till they saw sunlight at the mountain Thabir. The Prophet (ﷺ) opposed them and returned before the sunrise
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih Bukhari (3838)
In-book reference: 11:218