About flash loans:
The borrowed funds, plus a fee, must be repaid to the protocol before the transaction ends. Otherwise, the entire transaction is void, as if it never happened.
Flash loans work without collateral because of transaction atomicity: the entire transaction either succeeds or is rolled back, so the borrowed funds can’t be taken without being repaid.
$AAVE 160.03(+0.044%)

#AAVE

NFA, DYOR.