Sunan Abi Dawud Book 2, Hadith 304
The Prophet (ﷺ) said: Do not pray behind a sleeping or a talking person.
I never saw the Messenger of Allah (ﷺ) praying in front of a stick, a pillar, or a tree, without having it opposite his right or left eyebrow, and not facing it directly.
The Prophet (ﷺ) said: When one of you prays facing a sutrah he should keep close to it, and not let the devil interrupt his prayer.
Abu Dawud said: This tradition has also been narrated by Waqid b. Muhammad from Safwan from Muhammad b. Sahl on the authority of his father, or on the authority of Muhammad b. Sahl from the Prophet (ﷺ). Some have narrated it from Nafi' b. Jubair on the authority of Sahl b. Sa'd. There is a variation in the chain of its narrators.