Narrated Abu Hurairah (ra): The Prophet (saws) said "Certainly a time will come when people will not bother to know from where they earned the money, by lawful means or unlawful means." (See Hadith no. 2050)
Hadith ReferenceSahih Bukhari / The Book of Sales (Bargains) / Hadith: 2083
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة