One brother claiming more from father's estate

Q: I have a question regarding hibah and wirasat.

We are 3 brothers and 1 sister, my father did all our marriages, but he spent a little more in our sister's marriage. Now my father is no more in this world, so one of my brother's is claiming that since the expenses for my sister's wedding was more, he is claiming for that much more share in the wirasat.

Kindly let me know the solution for this, does he have the right to claim more? If yes, then how much should he be given?

Note: Only 1 brother is claiming, the other 2 brothers are not claiming.

Trading one tuna for two salmons

Q: I have been curious for a while now about, "what is considered the same جنس when it comes to fish"... more specifically, can I trade 1 tuna for 2 salmons, would it be riba? Is the جنس the entire species of fish (which would entail riba) or is it in each respective sub-species, e.g. tune, salmon, yellowtail etc.?

Helping one's brother who is in need

Q: I took a project and decided that some percentage of the profit I will give to my brother who is sick. And some I will give in the way of Allah. After finishing my project I give some money to my brother but now my brother asked me for more money. He is jobless and due to illness he can't do any job. Can I also give the other share to him?

Is it necessary to repeat the salaah if water becomes available after making tayammum?

Q:

1. According to Bahishti Zewar, Tayammum is performed by first striking the palms of both the hands on a “clod of earth” and then passing the hands on the face. Thereafter, the palms of both hands are again struck on a clod of earth and passed over both the arms including the elbows. However, what about the feet? Are the feet not included at all?

2. In instances where a clean piece of ground is nowhere to be found, what then are the alternatives? In the situation, if one happens to have a bag of plaster sand in one’s garage, would Tayammum be valid if the plaster sand is used instead?

3. Once salaat is performed with Tayammum, is it necessary to repeat the salaat when water becomes available?

Were the Sabeans Muslims?

Q: I read this on the internet about the Sabeans: In brief, they did not reject the Prophets or regard it as obligatory to follow them. In their view, whoever followed (the Prophets) is blessed and saved, and whoever follows a path similar to that of the Prophets by virtue of his own reasoning is also blessed and saved, even if he did not follow the Prophets in specific terms. In their view, the call of the Prophets was true but there was no one specific route to salvation. Isn’t it all kufr? Also was a specific prophet sent to them?

Performing Tahiyyatul musjid before the fardh of Fajr and Asr

Q:

1. Please advise whether one can read Tahiyyatul Masjid Salaah once Fajr time has set in.

Context to the question: I reach the Masjid and Fajr time has set in. I still need to perform my 2 Rakaats of Fajr Sunnat Salaah. There is sufficient time for the Farz Salaat to commence.

2. Also please advise of the same once Asr Time has set in.

Context to the question: I reach the Masjid and Asr time has set in. I still have sufficient time to perform my 4 Rakaats of Asr Sunnat Salaah. There is sufficient time for the Farz Salaat to commence.