What is the ruling on one who sells his kidney because of his poverty?

Question : The questioner says: I am a poor man, and I want to sell my kidney to help my family. Is there a sin on me or not?

Answer : Well, okay, so you would keep the second one so as to get more money. Does anyone have the right to cut off one of his organs? No, he does not have the right. I mean, if a man brought a knife and said, "I want to be hired to guard without any benefit," we would say it is not permissible; it is forbidden for you. Because Allah says: And the prohibition against killing the soul does not mean you kill with a knife, even in cases involving harm. The evidence for this is that 'Amr ibn al-'As (may Allah be pleased with him) was sent by the Prophet (peace and blessings be upon him) on a military expedition.
He became in a state of major ritual impurity, and he had no water, so he performed dry ablution and prayed with his companions. When he returned to the Prophet (peace and blessings be upon him), he said, "Did you pray with your companions while in a state of major ritual impurity?" He said, "O Messenger of Allah, I remembered the saying of Allah the Exalted: And the night was cold, so I performed dry ablution." Did the Prophet (peace and blessings be upon him) laugh in approval or disapproval? In approval. This indicates that the prohibition against killing the soul is a prohibition against what harms the soul. So how can you sell your kidney? No, this is not permissible. Because if you sell it, how many will remain with you? One. So the burden will be on one, and the burden on two is easier, because the burden on two is shared between them, but on one, there is pressure on it. And Allah, Mighty and Majestic, is Wise; He did not create the kidneys in vain. Then this remaining kidney, with the pressure on it or for one reason or another, may be afflicted with a defect. And if it is afflicted with a defect, it is to the graveyard. Because the person remains without kidneys. But if the defect strikes this remaining one and he has the other, the other takes its place. For this reason, we see that it is not permissible for a person to sell any of his organs ever, because that is a trust with him. And glory to Allah the Great, he takes money in exchange for one of his organs, perhaps he will perish before he benefits from this money, and the money will be for others, and he will destroy himself. Yes, that is right. As for donation, we may say that it is a matter of self-sacrifice, because self-sacrifice is something the Shari'ah has addressed. But does this self-sacrifice achieve the benefit for the one who sacrifices? Or perhaps it is transplanted into his body and the body rejects it. And we would have committed a prohibited act for a benefit that is not realized.
And here comes the principle mentioned earlier: warding off harms and securing benefits. Often the body rejects what is placed in it, such as a kidney or otherwise. And in that case, the harm is realized in removing this kidney from the place where Allah placed it to another place that may not be compatible with it, and it becomes corrupted. Yes, that is right.