I heard the Messenger of Allah ﷺ say, "The dusty earth has not carried, nor has the green sky shaded, a man more truthful in speech than Abu Dharr."
حدثنا علي بن محمد حدثنا عبد الله بن نمير حدثنا الأعمش عن عثمان بن عمير عن أبي حرب بن أبي الأسود الديلي
سمعت رسول الله ﷺ يقول ما أقلت الغبراء ولا أظلت الخضراء من رجل أصدق لهجة من أبي ذر
[Hasan] Reported by Tirmidhi in Manaqib, chapter on the Manaqib of Abu Dharr Ghifari , hadith no. 3801, from the hadith of Ibn Numayr, with this chain, and he said, "Hasan."Ibn Umayr is daif and a mudallis, but there is a corroborating hasan witness in Tirmidhi, hadith no. 3802. Tirmidhi graded it hasan, and Ibn Hibban, Hakim, and Dhahabi graded it sahih.