Reply To: Chidushim on Daf Yomi

ברכות ט,א

שלא יאמר אותו צדיק ועבדים וענוי אותם קיים בהם ואחרי כן יצאו ברכוש גדול לא קיים בהם Avraham Avinu should not say that the servitude and affliction was done to them but the coming out from Mitzraim with great wealth was not. In the Haggadah it says ברוך שומר הבטחתו לישראל we thank Hashem for keeping His promise. Asks the Dubna Magid, doesn’t Hashem have to keep his promise on His own? He gives two meshalim.
There was a young man who was working for a man. He wanted to pay him in paper money which the young man refused to accept, saying he wants to get paid in coins. He was trying to convince him that paper money is just as good, but the young man did not want to budge. The man decided to ask the young man’s
father for advice. He told him, my son worked for you, so you must pay him a currency that he values.
The nimshal, the great wealth Hashem promised was the Torah. The Jews at that time did not understand the value of it, so Avraham Avinu said, pay them with a great wealth they appreciate.

There was a young man being trained as a waiter. He was told serve fish and horseradish together, He did not follow the direction and gave on one table fish and on the other table horseradish. The horseradish people were upset where is our fish?
Avraham Avinu said that the same people must get the great wealth who suffered. The emphasis is done to ‘them’ and not to another generation who did not suffer.
Why was there a bizas mitzraim and a bizas hayom?
The Dubna Magid has on this also amashel:
Tho kings decided to battle by picking their strongest fighters to fight in their behalf and the nation whose fighter loses will serve the other.
One fighter turned things around in the last minute. His king got upset at him, why did you give me the fear and feeling that I lost? If their would not be a bizas mitzraim by borrowing kelim, the Jews would have thought that they will not get it.
This might be another answer to the question above that the promise would be kept through bizas hayom
but Avraham wanted them to know right away that the promise is being kept.