Sayyiduna Abu Dharr (may Allah be pleased with him) says that I entered the mosque and there was the Messenger of Allah (peace and blessings be upon him) sitting alone, so I also sat down with him. I said... and (then) he narrated a long hadith in which it was also mentioned: "Speak the truth even if it is bitter."
Hadith Referenceمسند الشهاب / 651
Hadith Gradingمحدثین:إسناده ضعيف جدا
Hadith Takhrij«إسناده ضعيف جدا ، وأخرجه المعجم الكبير : 1651» ابراہیم بن ہشام بن یحییٰ کذاب ہے ۔