Unknown transaction

Hello

Today I swapped through metamask using sushiswap some matic to usdt

Was around 100 usdt, After the swap I send a small transaction of 1 usdt first to my destination wallets

Then, I send the rest, but I noticed a small incoming transaction of 0.008 usdt in the mean time on my account

Very small but curious what's that, as I see the address that send this to me has no history, only this small amount

Didn't asked me to accept anything and was send normally to my binance account with the rest of my usdt

I have no clue what was that, at first I thought maybe was some returning from my swap at sushiswap but the zero transaction history of that address is strange