Hadith #2377 (Sunan Abi Dawud)
Book: Fasting (Kitab Al-Siyam)
Narrator(s): Anas ibn Malik, Muhammad bin Khazim al-Darir محمد بن خازم أبو معاوية الضرير, Ubaidullah bin Abi Bakr عبيد الله بن أبي بكر بن أنس, Wahb bin Bqyh bin 'Uthman وهب بن بقية بن عثمان
Grade: Da'if

The Prophet (ﷺ) commanded to apply collyrium mixed with musk at the time of sleep. He said: A man who is fasting should abstain from it.
Abu Dawud said: Yahya b. Ma’in said to me: This tradition about the use of collyrium is munkar (i.e. contradicts the sound traditions on the subject).

Source: https://parallelquran.com/hadith/sunan-abi-dawud-2377/

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Hadith #5169 (Sunan Abi Dawud)
Book: General Behavior (Kitab Al-Adab)
Narrator(s): Anas ibn Malik, Hammad bin Zayd حماد بن زيد بن درهم الأزدي الأزرق, Muhammad bin 'Ubaid al-Tanafasi محمد بن عبيد بن أبي أمية الطنافسي, Ubaidullah bin Abi Bakr عبيد الله بن أبي بكر بن أنس
Grade: Sahih

when a slave acts sincerely towards his master and worship Allah well, he will have a double reward.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-5169/