It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) met Sayyiduna Abu Dharr (may Allah be pleased with him) and said: "O Abu Dharr! Shall I not tell you of two traits which are very light on the back (to bear) and much heavier in the Scale (of deeds) than others?" He said: "Certainly, O Messenger of Allah (peace and blessings be upon him)!" He (peace and blessings be upon him) said: "Hold fast to good character and long silence. By the One in whose Hand is the soul of Muhammad (peace and blessings be upon him), the creation has not done any deed more beloved to Allah than these two."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated these two hadiths from Thabit (may Allah have mercy on him) except Bashshar bin al-Hakam."
Hadith Referenceالمعجم الأوسط / باب الميم / 7103
Hadith Gradingمحدثین:إسناده جيد
Hadith Takhrij«قال المباركفوري: إسناد جيد رواته ثقات «تحفة الأحوذي شرح سنن الترمذي، ج 3، ص 145»» «أخرجه أبو يعلى فى «مسنده» برقم: 3298، والبزار فى «مسنده» برقم: 7001، وابن حجر فى «المطالب العالية» برقم: 2568»