Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings of Allah be upon him): "Whoever earns lawful wealth and eats from it himself, or wears it, or spends it on anyone else among Allah's creation besides himself, then this thing will be a means of attaining purity for him."
Hadith Referenceصحیح ابن حبان / كتاب الرضاع / 4236
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيضعيف - «التعليق الرغيب» (3/ 12).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده ضعيف