Blood transfusions and organ transplants

Q: I would like to seek clarification regarding the permissibility of blood transfusions, organ transplants, and related medical procedures in Islam. Specifically, I would appreciate guidance on the following: 

1. What is the ruling on receiving and donating blood? 

2. What is the ruling on organ transplantation in general? 

3. Is there any ijma on the permissibility of organ transplants, as some individuals claim? 

4. Are there differences of opinion regarding organ donation during one’s lifetime versus after death? 

Going for umrah when one has outstanding qadha salaah

Q: Alhamdulillah by the mercy of Allah, I have been consistent with my salaah with Jamaat for many years, and have no qadha from the age of 17 onwards. However, before that unfortunately I used to miss most of my Salaah. 

My family wants me to go for Umrah but I don't feel it to be the right thing for me to join them, as I haven't completed my qadha salaah yet. I feel it's doesn't make sense to do that great but nafl amal when a compulsory amal is outstanding. I would feel extremely uncomfortable visiting the Kabah Shareef and Madinah, including the mubarak qabr of Nabi (sallallahu alaihi wasallam), and then conveying the durood with such major sins and unpaid debt on my shoulders. I understand that there is obviously barakah in Umrah, but there might be barakah in making qadha salaah as well (in my opinion). 

In addition, I find that my concentration and devotion to any nafl amal is weak and I always feel that I'm wasting time since I'm not prioritizing what is more important in the sight of Allah. Please advise.

Listening to binaural beats to sleep

Q: Is it permissible to listen to binaural beats for sleep? I am a very sensitive person about sound. I am living in a bachelor room. My room partner snores so I cannot sleep easily. I spoke to him about his snoring but there's no improvement. Does Islam allow listening to binaural beats like: Rain with thunder storm sounds, ocean sounds and sounds with a piano?

Selling malic acid to breweries and to manufacture sweets

Q: I am interested in purchasing a company that manufactures malic acid. The acid is used in the manufacture of sweets to make them taste sour and also used in the manufacture of beer to give it a sour taste. 

The main customer base of the company is the breweries. 

Will it be permissible for me to purchase the company and maintain the same customer base?

Promoting women’s modest clothing on female models

Q: I would like to seek guidance regarding promoting a women’s modest clothing business on Instagram. 

1. Is it permissible to advertise modest clothing using female models if their faces are covered or not shown at all (for example, only showing the lower body such as the outfit from the shoulders down or waist down)? 

2. If using human models in this way is not permissible, would it be allowed to use AI-generated images to promote the clothing, where the “model” is not a real person and the face and eyes are also covered or not shown (only the lower body is visible)? 

My intention is to maintain modesty while still presenting the clothing in a presentable and appealing way for customers.