I am one of those who send blessings upon the Prophet between 50 and 100 times a day, according to circumstances. I say: “Allahumma salli ‘ala Muhammadin wa aali Muhammad (O Allah, send blessings upon Muhammad and the family of Muhammad).” There are some people who tell me that my sending blessings upon the Messenger of Allah is lacking. Can you tell us – may Allah reward you with good – what is the ideal way to send blessings upon the master of mankind, and is the way I am doing it really lacking?

There are many religions.

Why do Muslims think that Islam is true. Is there any factual basis?

What is the rulling on, when a Muslim say "We believe we are all children of Allah" Basing it on the weak Hadeeth (All creations are sustained by Allah). Please provide details of the ruling.

There is a person who was in a state of janaabah and he wanted to do ghusl for janaabah, but he said: I shall wait until the time for Jumu‘ah comes, then I will do one ghusl for both Jumu‘ah and janaabah. That was after Fajr prayer. But when the time for Jumu‘ah came, he did ghusl for Jumu‘ah and forgot to intend to do ghusl for janaabah. Then he prayed for an entire day, until Zuhr on Saturday, and he led the people in praying Zuhr. Then after Zuhr he remembered. Was his prayer and the prayer of the people valid? Should he tell the people about that?.

Is it permissible to pray in a mosque where the ground floor is controlled by the Shi‘ah and the Sunnis control the upper floor?

Can a muslim pray for his non-mulsim mother who has passed away?

Is it permissible to ask the Muslims -when meeting with them- about the state of their faith or their hearts? One of them said to me that this is a matter of the unseen and that it is not appropriate to ask about it.

A very common problem seen in youth in western countries is that their parents allow them to indulge in some form of haram in the hope that will stop them from committing worse haram. An example of this is that parents will say that they allow their children to indulge in music in the hope that will stop them from going out with bad people or leaving their home all together. Parents are afraid that if they enforce the law of Allah in their homes, that their children will leave. 

What is Islam's position on this sort of compromise? Some parents also say that they only have the duty to tell their children something is haram, and then their children have to choose for themselves because they are already young adults (i.e. 13 -18 years old and unmarried, living at home). Don't the parents have to forbid haram by all means, or do they just say that is haram and then leave them be? To what extent do parents have to go to forbid their children from haram?

Parents also believe that once their children reach the age of puberty they are no longer responsible for their sins or actions, and so say they will have no sin if they advise their children something is haram and then leave them. Is this true? Or do parents always have the responsibility of forbidding their children from haram, and will they be responsible if they see their children doing haram and just leave them after advising them?

What are the things that a Muslim woman may uncover in front of a kaafir woman, such as a Buddhist woman for example? Is it true that she is not allowed to uncover her face?

In my school it is Christmas time. My school has this Christmas tradition. Every year a classroom gets an adopted family that is poor so they can buy gifts, food, and donate money to them for Christmas. Unfortunately, I have refused to donate any money or give any food for the following reason: These denotations will be done in the name of Christmas, so that when the adopted family receives these donations, they will say "God Bless The Christians". 
Am I right for refusing to give donations?