'Stranger' in the Bible

My son, if you have become surety (guaranteed a debt or obligation) for your neighbor,If you have given your pledge for [the debt of] a stranger or another [outside your family],

The heart knows its own bitterness,And no stranger shares its joy.

[The judge tells the creditor], “Take the clothes of one who is surety for a stranger;And hold him in pledge [when he guarantees a loan] for foreigners.”

Let another praise you, and not your own mouth;A stranger, and not your own lips.

[The judge tells the creditor,] “Take the garment of one who is surety (guarantees a loan) for a stranger;And hold him in pledge when he is surety for an immoral woman [for it is unlikely the debt will be repaid].”