In finance, a loan is the lending of money by one or more individuals, organizations, or other entities to other individuals, organizations etc. The recipient (i.e. the borrower) incurs a debt, and is usually liable to pay interest on that debt until it is repaid, and also to repay the principal amount borrowed.
If you know that your brother would be ok with you using his amanah in a wise and responsible way, and that you would return it back to your brother once he asks for it, then you are allowed to lend that money to your father.
And Allah knows best.
If you have already paid it's Khums, then no Khums again on the remaining amount because it has been already purified by paying its Khums.
Yes, it is allowed if it is necessary.
Any business which deals with interest is not allowed in Islam. Raising funds for loans with interest is also not allowed.
Social media marketing is like any other type of marketing, must avoid Haraam businesses.
Such loan is permissible to take. Some scholars also allowing taking loans with interest if it is absolutely necessary and the person is in much hardship.
May Allah grant you success
as salam alaikum
usury, or charging interest on money loaned, is one of the major sins and therefore it is not permissible.
With prayers for your success.
The amount which you lent last year was supposed to be calculated in your Khums of last year but as it was not with you, you did not pay its Khums. When you received it back, you must pay its Khums immediately.
Yes, it is permissible to buy a house on mortgage from a non Muslim bank.
This is according to the most learned scholars who are known as Maraaji' of Taqleed.
You can pay the Khums of that amount now (on the date of your Khums) if you are sure that it will be returned to you, or wait until it comes back to you then pay its Khums.
1. Repeating Estighfaar day and night, especially during Sojood and when are away from people.
2. Being busy in Du'a and Tasbeeh and Quran between Fajr and sunrise.
3. Seeking from Allah (SWT) near your parents and requesting their Du'a for you. If they are dead then near their graves.
4. Reciting Sura Yaseen every morning and Sura Al-Waqi'ah every night.
5. Seeking the Shafa'ah from Ahlul Bayt (AS).
If you take the money from a Non Muslim bank and use it in lawful way, then it is allowed.
If you take the money from a Muslim bank, then you must have with them an agreement within the frame of Islamic rules of business.
Yes you can continue to pay Khums each year despite having a mortgage and adjust the monthly mortgage amount as expenses.