It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, among sins there are some sins which neither prayer, nor fasting, nor Hajj, nor Umrah expiates." The Companions (may Allah be pleased with them) said: O Messenger of Allah! Then what expiates them? He (peace and blessings be upon him) said: "The worries and anxieties that befall one in seeking a livelihood."
No one narrated this report from Imam Malik (may Allah have mercy on him) except Yahya bin Bukayr (may Allah have mercy on him), and Muhammad bin Sallam (may Allah have mercy on him) is alone in narrating it from him. Ahmad bin Yahya (may Allah have mercy on him) said: I asked Muhammad bin Sallam: How did you hear this hadith from Ibn Bukayr when no one other than you heard it? He replied: I was sitting with Yahya bin Bukayr (may Allah have mercy on him) when a man came to him and mentioned his poverty, so Ibn Bukayr (may Allah have mercy on him) said: Imam Malik (may Allah have mercy on him) narrated to us, and then he mentioned this hadith.
Hadith Referenceالمعجم الأوسط / باب الألف / 102
Hadith Gradingمحدثین:إسناده ضعيف جدًّا
Hadith Takhrij«قال الهيثمي: وفيه محمد بن سلام المصري قال الذهبي حدث عن يحيى بن بكير بخبر موضوع قلت وهذا فيما رواه عن يحيى بن بكير «مجمع الزوائد ومنبع الفوائد، ج 4، ص 64»» «قال ابن حجر: وإسناده إلى يحيى واهي «التلخيص الحبير في تخريج أحاديث الرافعي الكبير، ج 4، ص 292»»