35 The Israelites did as Moses instructed and asked the Egyptians for articles of silver and gold and for clothing. 36 The LORD had made the Egyptians favorably disposed toward the people, and they gave them what they asked for; so they plundered the Egyptians.
No case here.
What about the interest?
The Koran, over 1400 years back condemned today's modern banking concepts before they were put into wide scale practice:
"And what you give in interest [riba in Arabic] that it may increase on (other) people's wealth, increases not with Allah (God)...(Koran 30:39)."
The Koran states explicitly that trade is not the same as interest:
Those who consume interest shall not rise, except as he rises whom Satan by his touch prostrates [i.e one who is misled]; that is because they say:"Trade is like interest"; whereas, Allah [God] has permitted trading but forbidden [Haraam in Arabic] interest. Whosoever receives a warning from his/her Lord, he shall have his past gains and his affair is committed to Allah (God); but whosoever reverts (to devouring interest) those, they are the inhabitants of the fire, therein dwelling forever. (Koran 2:275)
And it looks like asking for interest will send them straight to hell.