Meaning of Kalaamun naas when making dua in Salaah

Q: I am following Hanafi Fiqh.

1. In the current situation of Palestine, I have started reading Qunut e Nazila in Fajr prayer. I restrict myself with the Arabic dua from Quran and Hadith. However, I said one day, allahummansuril mujahideena fi filasteen (in Arabic). Would that be considered as Kalamun nas?

2. Secondly, could you please let me know about the guideline which will be easy for me to understand the Kalamun Nas discussed by the fuqaha. I have heard that if we are making dua in Arabic outside Quran and Hadith, it should not be in the classification of Kalamun Nas. However, this thing did not become clear so that's why I am refering to you.

Cleaning water splashes on the floor after flushing the toilet

Q: I spend a lot of time in the washroom, trying to clean impurities. This is because I worry about impurities like urine touching water which comes on my body. I worry about splashes that come while flushing when they land on the floor. Since the splashes from flushing are impure and there is water on the floor and when impurity mixes with a body of water that is less than a certain length and width (I forgot), the whole water becomes impure so I clean the floor as well and the slippers too because they touch the floor. The splashes from flushing also land on the sink nearby so I wash the sink also. I also have to wash the seat where the same splashes also come. Can I simply use the washroom without washing anything and only see if my body is visibly pure or impure and not worry about coming into contact with water that had come into contact with impurities?

Informing one's prospective spouse about one's medical condition

Q: I was diagnosed with psoriasis 3 years back. When it initially came, it was bad where my body was almost covered with it. Upon taking the treatment biologics injections, it cleared rapidly in 2-3 months.

Since Psoriasis is an autoimmune condition I have to keep it in control and according to doctors it cannot be cured completely, but there are medications which can keep it in control. I know few people who have been cured from it (remission).

After this initial major outbreak, I was pretty much clear from it by the grace of Allah for the past 3 years.

Only this year, in 2023, it was a little bad for around 6 months where 5-8% of my body was covered, according to the doctor since i was off my medication for 1.5 years.

When I was on medication I used to get few plaques during winters which covered around 3% of the body and they got cleared in summers in 2-4 months. Rest of the months I was 99.9% clear of it.

Now I have started the medication again and it is in control where I have around 1-2% of involvement and hoping it will be cleared in 1-2 months inshallah. I take injections once every month now.

Other than this condition I am healthy and normal and I also work by Allah's grace.

I am planning to get married. Given my history of this condition should I inform my prospective spouse about this condition. I feel nobody will be interested after I inform them about it. So I am not able to take a decision due to this. Doctors told me that it is perfectly okay to get married living with this condition.

Demanding payment from a client

Q: I did work for a Hindu. Payment was due months ago. He owes me R425. It is a tiny amount, but I spent a lot of time on the work, and the amount will cover certain business expenses.

He promised thrice to pay. I stated clearly the terms when I quoted him before he paid the deposit, which he agreed to. But now he says, months later, those terms are unfair, so he will not pay. I should email, and message him several times for months, but no response.

He finally answered the phone. I was so angry at his excuses and lies, that my hands started shaking and I started arguing loudly and interrupting him. I never get vulgar or insult, but I was rude and hostile. I never became like this ever before on a worldly issue in my entire life. Eventually he said he will pay month end. I said "Thank you, goodbye".

If he was a Muslim, I would have overlooked this for the sake of peace and community, hoping reward from Allah Ta'ala. But this treatment from a Hindu, I don't appreciate. Please advise:

(1) Was I sinful in talking rudely, angrily, and hostile with him? If yes, must I apologize to him for being rude? He has continued to lie and ignore me for months, and I finally got to speak to him on this occasion.

(2) What do you advise regarding the R425 he owes me? Should I pursue it or just drop the matter in view of peace? The next option I can consider is issuing him a legal letter of demand, following with Small Claims Court. But I do not want to go to court. However, I can threaten him with it. Insha Allah I will follow your advice.