Combining Abu Bakr’s bequest of one-fifth with the lack of recommendation for it in the case of one with little wealth

Question:
In the name of Allah, the Most Gracious, the Most Merciful. I say: Honorable Shaykh, may Allah grant you success. It is reported that it was narrated from Abu Bakr al-Siddiq (may Allah be pleased with him) that he bequeathed one-fifth, even though he left behind only a small amount of wealth. How do you reconcile this with the opinion that it is not recommended to bequeath any part of one’s wealth if one has only a small amount?

Answer:
And who knows that Abu Bakr left behind only a small amount of wealth? Abu Bakr was a well-known merchant in trade (may Allah be pleased with him) from the day he was in Makkah, and he was known for trading. However, he spent a great deal in the cause of Allah. Otherwise, he was engaged in trade from the day he was in Makkah. Yes.