Leviticus 25:47

And if the hand of the uncircumcised sojourner with you wax strong, and thy brother with him become poor, and sell himself to the uncircumcised stranger who is with thee, or to the stock of a strange religion, to serve him or to worship with him who is of the generation of strangers;

transplanted that is, “rooted” — someone of Gentile ancestry who has adopted the religion of Israel. This word has no cognate, but it is the opposite of “uproot you” [Psalms 52:7]. See also “you shall hamstring their horses” [Joshua 11:6].

AND IF A STRANGER WHO IS A SETTLER WITH THEE BE WAXEN RICH, AND THY BROTHER BE WAXEN POOR BESIDE HIM, AND SELL HIMSELF UNTO THE STRANGER WHO IS A SETTLER WITH THEE, OR ‘L’EIKER’ (TO THE STOCK OF) THE FAMILY OF ‘GEIR’ (A STRANGER). “The family of ‘geir’ — this means an idolater. Since Scripture [also] stated l’eiker (‘to the stock of’ the idolater), it refers to one who sold himself to the idol itself — to be its servant; not to worship it as a deity, but to hew wood and draw water for its service.” This is Rashi’s language derived from the Torath Kohanim. 5:1. And if so, the verse is saying: l’eiker ‘u’mishpachath geir [“to the stock of ‘and’ to the family of the stranger,” — since according to Rashi the verse speaks of two different people — and omits the conjunctive “and” and merely says, l’eiker mishpachath geir — literally “to the stock of the family of a stranger”]. Scripture calls the idol eiker [“plucking” or “uprooting”] because a person is dutybound to uproot thoroughly an object of idol-worship and to extirpate it.
But Onkelos translated l’eiker — l’armai (“to a gentile”), and this is the correct interpretation. Scripture is thus mentioning [the case of a Hebrew who] sold himself to a stranger who dwells with us, or who sold himself ‘l’eiker mishpachath geir’ (to the stock of the stranger’s family), who is himself a gentile, the word eiker thus being related to the expression ‘ikar sharshohi’ (the stump of its roots). Scripture states ‘mishpachath geir’ (the family of the stranger) [in order to indicate that] the stranger or the settler who became rich with us brought it about that the brother [i.e., the Israelite] become poor beside him [because he had emulated his ways] and thus be sold to the stock of the family of the stranger. Scripture commanded that he must be redeemed, this being a positive commandment upon all Israel that we are to redeem him, and then it commanded his kinsmen that they are the first [in this duty]. The purpose of the commandment is clear, that he should not become assimilated and learn from the ways [of his purchasers]. For in the case of [all] other sales, the redemption by kinsmen is a matter of choice [but here it is an obligation]. Therefore He said here, For unto Me the children of Israel are servants; they are My servants, meaning to say that “although the stranger who settled [with us] and the stock of his family do not have to observe the commandment of the Jubilee, they cannot buy My servants to be their [permanent] servants.”

או לעקר, who was uprooted from that kingdom, far from your homeland. He is neither a resident stranger (someone committed to keep the Noachide laws) nor a convert to Judaism, nor a resident pagan.

וכי תשיג יד גר, “if an alien settler has grown wealthy, etc.” the word גר here is a veiled reference to the Persian-Medes Empire.

או לעקר משפחת גר, “or to the offshoot of a stranger’s family.” This is a euphemism for the Roman Empire, which in due course, will be uprooted,” אחרי נמכר גאולה תהיה לו, “after it has been sold, it is subject to redemption.” This is based on Isaiah 63,4: כי יום נקם בלבי ושנת גאולי תהיה לי, “for I had planned a day of vengeance, and my year of redemption has arrived.”