Hadith #2606 (Sunan Abi Dawud)
Book: Jihad (Kitab Al-Jihad)
Narrator(s): Abdullah bin Muslima al-Qa'nabi عبد الله بن مسلمة بن قعنب القعنبي, Abdur Rahman bin Harmala عبد الرحمن بن حرملة بن عمرو بن سنة, Amr bin Shu'aib bin Muhammad عمرو بن شعيب بن محمد السهمي, Imam Maalik مالك بن أنس بن مالك بن أبي عامر, Shu'aib bin Muhammad bin 'Abdullah شعيب بن محمد بن عبد الله بن عمرو
Grade: Sahih

The Prophet (ﷺ) said: “O Allah, bless my people in their early mornings.” When he sent out a detachment or an army, he sent them at the beginning of the day. Sakhr was a merchant, and he would send off his merchandise at the beginning of the day; and he became rich and had much wealth.
Abu Dawud said: He is Sakhr b. Wada’ah.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-2606/

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Hadith #3278 (Sunan Abi Dawud)
Book: Oaths and Vows (Kitab Al-Aiman Wa Al-Nudhur)
Narrator(s): Abdur Rahman bin Harmala عبد الرحمن بن حرملة بن عمرو بن سنة, Ahmed bin Salah al-Masri أحمد بن صالح المصري
Grade: Sahih

“Make atonement for your oath and then do the thing that is better.”
Abu Dawud said: The version of this tradition transmitted by Abu Musa al-Ash’ari, ‘Adi b. Hatim and Abu Hurairah are variant. Some of them indicate breaking the oath before making atonement, and other making atonement before breaking the oath.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-3278/

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Hadith #4221 (Sunan Abi Dawud)
Book: Signet-Rings (Kitab Al-Khatam)
Narrator(s): Abdur Rahman bin Harmala عبد الرحمن بن حرملة بن عمرو بن سنة, ibn Mas'ud, Ma'tmar bin Sulaiman-al-Taufayl معتمر بن سليمان - الطفيل, Masdad bin Masrhad مسدد بن مسرهد بن مسربل, Rakayn bin al-Rabi' bin 'Amila ركين بن الربيع
Grade: Sahih

Ziyad b. Sa’d, Shu’aib and Ibn Musafir transmitted it from al-Zuhri. ‘Ali said in their versions: “of silver”.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4221/