ما هي النصائح التي أعطاها الرسول صلى الله عليه وسلم لأبي الدرداء؟

All prophetic hadiths are considered advice for the Ummah unless there is proof of their specificity, and there is nothing to specifically exclude Abu ad-Darda' from legislation. There are hadiths in which the Prophet, peace be upon him, gave him general commands for the Ummah, among them his advice to him concerning three matters: "Fasting three days of every month, observing the Duha prayer, and not sleeping until I pray Witr," and his saying to him, affirming Salman's advice: "Indeed, your Lord has a right over you, your soul has a right over you, and your family has a right over you; so give each one who has a right his due," and his saying to him: "It is not befitting for a prophet, when he prays, to raise his gaze to the sky until he finishes praying."