Reciting a para for one's own khatam and sending it as esaal-e-sawaab for another khatam

Q: I would like to find out regarding Quraan Khatams.

Usually when someone passes away and one goes to visit the relatives of the deceased - there are paras left out for whoever chooses to read and send esaale sawaab for the deceased. Similarly a group of willing relatives/ friends may distribute paras amongst themselves in order to complete a khatam for the deceased person.

So usually in the above cases, one chooses whichever para one likes - to contribute to the khatam. 

My question is: if one reads Quraan tilaawah daily and makes a khatam of that over the course of a month or a few months and perhaps, for example they are currently on the 10th para. So will it be permissible/valid for them to also choose the 10th Para for their khatam for the deceased person with the intention of only reading the para ONCE and the intention being for ones daily tilaawah as well as - contributing to the khatam for the esaale sawaab for the deceased person?

Distributing a property owned in a joint venture

Q: My wife and I were working together in the Gulf for the last 17 years and we don't have any children. During our stay in the Gulf, we purchased two properties. One property is registered on both our names and since I couldn't travel to our home country for some reason, we registered the second property only on her name as the single owner... It was purchased through our savings as security for retirement and only our money was used in buying this property.

Unfortunately my wife passed away all of sudden 5 months ago. Now my mother in law, my sister in law and my brother in law are claiming their share in the property after consulting one Mufti in our city. It was purely our hard earned money and I came back to my home country after my wife's death and I don't have any job here. I want to follow Shari'a and I don't want to destroy my Aakhirah also. Are they entitled to their share in the property ?

Defending the honour of a Muslim

Q: The Hadith of Rasulullah Sallallahu alayhi wasallam states: "He who defends the honour of his (Muslim) brother, Allah will secure his face against the Fire on the Day of Resurrection." [Jami al-Tirmidhi]

1. I have been in situations where Muslims (especially Ulama) are defamed. This sometimes happens in face to face conversations and sometimes on social media. I feel that it is my duty to defend my Muslim brother. However, a person told me that if I do not know the background to the entire situation/incident, I should keep silent and I should not defend my Muslim brother.

I wish to ascertain whether or not I should defend my Muslim brother in such situations despite my insufficient knowledge of the entire background.

2. The person who told me this explains that if I do defend my Muslim brother in such a situation without full knowledge of the background, I am indirectly defaming and doubting the person who passed on the information. Is this the correct understanding?