Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 252

وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٌو قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «مَا أَظَلَّتِ الْخَضْرَاءُ وَلَا أَقَلَّتِ الْغَبْرَاءُ أَصْدَقَ مِنْ أبي ذَر» . رَوَاهُ التِّرْمِذِيّ

`Abdallah b. ‘Amr told that he heard God’s messenger say: “The sky has not covered and the earth has not carried anyone more truthful than Abu Dharr.” Tirmidhi transmitted it.