Praise be to Allah.
It is not permissible to take out riba/interest-based loans, from the bank or elsewhere, even if that is to prepare a house for marriage, because of the definite prohibition on riba (interest) and the stern warning against it. Allah says (interpretation of the meaning):
“O you who believe! Be afraid of Allah and give up what remains (due to you) from riba (from now onwards) if you are (really) believers.
And if you do not do it, then take a notice of war from Allah and His Messenger but if you repent, you shall have your capital sums. Deal not unjustly (by asking more than your capital sums), and you shall not be dealt with unjustly (by receiving less than your capital sums).”
Muslim narrated that Jabir (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings of Allah be upon him) cursed the one who consumes riba, the one who pays it, the one who writes it down and the two who witness it, and he said: “They are all the same.”
Ibn Qudamah (may Allah have mercy on him) said: Every loan in which it is stipulated that something extra be paid is haram (impermissible), and there is no difference of opinion on this point. Ibn al-Mundhir said: They were unanimously agreed that if the lender stipulates that the borrower must pay extra or give him a gift, and he gives the loan on the basis that he will take an additional payment for that, it is riba.
End quote from al-Mughni.
What the one who has taken out a riba-based loan has to do is repent to Allah and regret what he has done, and he has to resolve firmly not to go back to this great sin and serious crime, concerning which there is narrated a warning such as has not been narrated concerning any other sin. We ask Allah to keep us safe and sound.
Moreover, according to Islam you are not obliged to pay back any more than the capital; as for the haram interest, you are not obliged to pay it and it is not permissible for the lender to take it from you, because Allah says: “... but if you repent, you shall have your capital sums. Deal not unjustly (by asking more than your capital sums), and you shall not be dealt with unjustly (by receiving less than your capital sums)”.
But if you fear harm and problems if you do not pay the interest, then pay it, and repent to Allah and feel dislike towards this great evil.
Shaykh Salih al-Fawzan (may Allah preserve him) was asked: I borrowed one hundred pounds from one of my friends on the basis that I would pay him back one hundred and fifty. When the time to pay it back came, I tried to give him one hundred only, but he insisted on taking the extra amount of fifty pounds in return for the loan. What is the ruling on this extra amount? If this comes under the heading of riba, is there any sin on me, and how can I rid myself of it, knowing that the money that I borrowed from him has become mixed with my own money. What do I have to do?
He replied: Allah has forbidden riba and has issued a stern warning against it. Allah says (interpretation of the meaning):
“Those who eat riba will not stand (on the Day of Resurrection) except like the standing of a person beaten by Shaytan (Satan) leading him to insanity…
O you who believe! Be afraid of Allah and give up what remains (due to you) from riba (from now onwards) if you are (really) believers.
And if you do not do it, then take a notice of war from Allah and His Messenger.”
There are many forms and types of riba. What you mention in the question is a loan with interest. The kind of loan that is allowed in Islam is al-qard al-hasan (a goodly loan) in which you lend something to your brother so that he may benefit from the loan, then he pays you back without any additional payment being stipulated and without paying less. This is the goodly loan. As for the loan which brings a benefit or the loan which is intended to bring a payment of interest, this is haram (unlawful) according to the consensus of the Muslims. It is haram according to the Quran and Sunnah (prophetic teachings) and the consensus of the Muslims, and a stern warning is issued to the one who does this. What should be done is to repay the amount that was borrowed; as for the additional payment which has been stipulated and taken from you, this is haram and is riba.
The Prophet (peace and blessings of Allah be upon him) cursed the one who consumes riba, the one who pays it, the two who witness it and the one who writes it down. He (peace and blessings of Allah be upon him) also cursed the one who consumes riba and the one who helps him to consume it. So what you have done is haram and is a major sin, and you have to repent to Allah. He has to give this interest that he took back to you, because it is not permissible for him. You committed a haram action by giving him the interest. What you should have done is to refrain from paying interest.
What you have done is blatant riba, so you both have to repent to Allah and not do any such transaction again. The other person has to return the interest that he took. And Allah knows best. End quote from al-Muntaqa min Fatawa al-Shaykh al-Fawzan.
Remember that the more quickly you get rid of this loan, the better it will be, so that you may rid yourself of riba and its effects.
So it is better for you to hasten to pay it off and to use the money that you were going to use for ‘Umrah to rid yourself of this debt.
We ask Allah to heal your son and to relieve your distress, and make you independent of means from halal (lawful) sources so that you will have no need of anything haram.
And Allah knows best.