Exchange goods with equal value instead of taking interest or riba from someone else in order to gain more wealth .

This hadith is about the prohibition of usury or riba in Islam. It was narrated by Abu Sa'id that dates were brought to Allah's Messenger (PBUH). He said that these dates were not like their own dates, which meant they were better quality. A man then said that they had sold two sa's of their own dates for one sa' of these fine dates. Upon hearing this, Allah's Messenger (PBUH) declared it as interest or riba and asked them to return the fine quality dates and get back their inferior ones instead. He then suggested that they should sell their inferior quality dates for money and use the money to buy the better quality ones instead. This hadith teaches us about the importance of exchanging goods with equal value rather than taking interest or riba from someone else in order to gain more wealth. It also shows us how merciful Allah's Messenger was towards his people as he did not want them to suffer any losses due to taking interest or riba from others.