Question:
Science tell us that whatever one eats, it has an effect on one’s behaviour. Why then, does Islam allow Muslims to eat non-vegetarian food, since eating of animals could make a person violent and ferocious?
Answer:

1.   Only eating of herbivorous animals allowed
I agree that, what a person eats has an effect on his behaviour. This is one of the reasons why Islam prohibits the eating of carnivorous animals like lion, tiger, leopard, etc. who are violent and ferocious. The consumption of the meat of such animals would probably make a person violent and ferocious. Islam only allows the eating of herbivorous animals like cow, goat, sheep, etc. that are peaceful and docile. We Muslims eat peaceful and docile animals because we are peace loving and non-violent people.

2.   The Qur’an says Prophet prohibits what is bad
The Qur’an says:
"The Prophet commands them what is just and prohibits what is evil". "He allows them as lawful what is good (and pure) and prohibits them what is bad (and impure),"
[Al-Qur’an 7: 157]
"So take what the Messenger assigns to you and deny yourselves that which he withholds from you."
[Al-Qur’an 59: 7]
For a Muslim, the Prophet’s statement is sufficient to convince him that Allah does not wish humans to eat some kinds of meat while allowing some other kinds.

3.   Hadith of Mohammad (pbuh) prohibiting eating of carnivorous animals

According to various authentic Ahadith narrated in Sahih Bukhari and Sahih Muslim including hadith narrated by Ibn Abbas in Sahih Muslim, Book of hunting and slaughter,Hadith No. 4752 and Sunan Ibn-I-Majah chapter 13 Hadith no. 3232 to 3234, the Holy Prophet (pbuh) prohibited the eating of:
         i.            Wild animals with canine teeth, i.e. meat eating carnivorous animals. These are animals belonging to the cat families such as lion, tiger, cats, dogs, wolfs, hyenas, etc.
       ii.            Certain rodents like mice, rats, rabbits with claws, etc.
      iii.            Certain reptiles like snakes, alligators, etc.
      iv.            Birds of prey with talons or claws, like vultures, eagle, crows, owl, etc.
    
 MUSLIMS WORSHIP THE KAABA
Question:
When Islam is against idol worship why do the Muslims worship, and bow down to theKaaba in their prayer?
Answer:
Kaaba is the Qibla i.e. the direction Muslims face during their prayers. It is important to note that though Muslims face the Kaaba during prayers, they do not worship the Kaaba. Muslims worship and bow to none but Allah.
It is mentioned in Surah Baqarah:
"We see the turning of thy face (for guidance) to the heavens: now shall We turn thee to aQiblah that shall please thee. Turn then thy face in the direction of the Sacred Mosque: wherever ye are, turn your faces in that direction."
                              [Al-Qur’an 2:144]

1.   Islam believes in fostering unity
For instance, if Muslims want to offer Salaah (Prayer), it is possible that some may wish to face north, while some may wish to face south. In order to unite Muslims in their worship of the One True God, Muslims, wherever they may be, are asked to face in only one direction i.e. towards the Kaaba. If some Muslims live towards the west of the Kaaba they face the east. Similarly if they live towards the east of the Kaaba they face the west.

2.   Kaaba is at the Centre of the World Map
The Muslims were the first people to draw the map of the world. They drew the map with the south facing upwards and north downwards. The Kaaba was at the centre. Later, western cartographers drew the map upside down with the north facing upwards and south downwards. Yet, Alhamdullilah the Kaaba is at the centre of the world map.

3.   Tawaaf around Kaaba for indicating one God
When the Muslims go to Masjid-e-Haram in Makkah, they perform tawaaf or circumambulation round the Kaaba. This act symbolizes the belief and worship of One God, since, just as every circle has one centre, so also there is only one Allah (swt) worthy of worship.

4.   Hadith of Umar (may Allah be pleased with him)
Regarding the black stone, hajr-e-aswad, there is a hadith (tradition), attributed to the illustrious companion of the Prophet Muhammed (pbuh), Umar (may Allah be pleased with him).
According to Sahih Bukhari, Volume 2, book of Hajj, chapter 56, H.No. 675. Umar (may Allah be pleased with him) said, "I know that you are a stone and can neither benefit nor harm. Had I not seen the Prophet (pbuh) touching (and kissing) you, I would never have touched (and kissed) you".

5.   People stood on Kaaba and gave the adhaan

At the time of the Prophet, people even stood on the Kaaba and gave the ‘adhaan’ or the call to prayer. One may ask those who allege that Muslims worship the Kaaba; which idol worshipper stands on the idol he worships?

Question:
Why are non-Muslims not allowed in the holy cities of Makkah and Madinah?
Answer:
It is true that non-Muslims are not allowed in the holy cities of Makkah and Madinah, by law. The following points will serve to elucidate the possible reasoning behind such a restriction.

1.   All citizens are not permitted in the cantonment area

I am a citizen of India. Yet, I am not permitted to enter certain restricted areas like the cantonment. In every country there are certain areas where a common citizen of that country cannot enter. Only a citizen who is enrolled in the military or those who are connected with the defence of the country are allowed in the cantonment area. Similarly Islam is a Universal Religion for the entire world and for all human beings. The cantonment areas of Islam are the two holy cites of Makkah and Madinah. Here only those who believe in Islam and are involved in the defence of Islam i.e. the Muslims are allowed.
It would be illogical for a common citizen to object against the restriction on entering a cantonment area. Similarly it is not appropriate for non-Muslims to object against the restriction on non-Muslims against entering Makkah and Madinah.

2.   Visa to enter Makkah and Madinah
a.       Whenever a person travels to a foreign country he has to first apply for a visa i.e. the permission to enter that country. Every country has its own rules, regulations and requirements for issuing a visa. Unless their critera are satisfied they will not issue a visa.
b.       One of the countries which is very strict in issuing a visa is the United States of America, especially when issuing visas to citizens of the third world. They have several conditions and requirements to be fulfilled before they issue a visa.
c.       When I visited Singapore, it was mentioned on their immigration form - death to drug traffickers. If I want to visit Singapore I have to abide by the rules. I cannot say that death penalty is a barbaric punishment. Only if I agree with their requirements and conditions will I be permitted to enter the country.
d.       The Visa – The primary condition required for any human being to enter Makkah orMadina is to say with his lips, La ila ha illallah Muhammed ur Rasulullah meaning that ‘there is no God but Allah and Muhammed (pbuh) is His Messenger