(Saheeh Al-Bukhari, Muslim)
- Imam Bukhari Rahimahullah mentioned this hadeeth in the "Book of trade". When it comes to trading there are many matters that are doubtful, matters which existed then and even now, e.g. where cheating is done professionally. Therefore we have to be careful if the matter related to trading is clear and evident, permissible or not permissible, or if it is doubtful, in which case we have to avoid it.
- The relationship between the heart and the rest of the hadeeth: if one's heart is strong and firm in Tawheed, and sound with clear understanding and wisdom, then he will be able to stay away from doubtful matters from fear of falling into the prohibited area. But if the heart is not so firm in Tawheed, then he will take matters lightly, and thus, be more prone to slowly and gradually fall into the haram. So, the main issue of this hadeeth is the purification of the heart, which all of us need to keep working on.