It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whenever a servant covers (the faults of) another servant in this world, Allah Almighty will cover him on the Day of Resurrection." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it. And this hadith strengthens the narration of al-A'mash from Abu Salih and the narration of Muhammad bin Wasi', because Asbat bin Muhammad al-Qurashi narrated it from al-A'mash through some of his companions, while Hammad bin Zayd narrated it from Muhammad bin Wasi' through a man, from Abu Salih.