Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates this saying of the Prophet (peace and blessings be upon him): "The best earning is the earning of the worker's hand, provided he is sincere (in his work)."
Ahmad recorded it, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البيوع / 6213
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه احمد فى المسند (334/2) ، أخرجه مسند أحمد برقم: 8207»