5 giants of Islam

There are giants peculiar for any religion people have in this world. Those are the main rules every single person who profess certain religion has to follow. There are ten giants of Christianity and all Christians are obliged to follow those giants. There are the same giants of Islam religion. There are five giants every Muslim person has to fulfill and all of those giants are recordered in Koran.
First of all every one who profess Islam has to proclaim Allah as the only god and refuse all other gods. That is fulfilled by pronouncing such words in Arabian "There is no another god except Allah and Mohammed is his prophet". With these words people repudiate any other god and recognize Allah as their god and master. This phrase in no case may be pronounced for fun or just like that. These are sacred words.
Another giant means to perform a pilgrimage to Mecca. This pilgrimage is called Hajji. Hajji has to be made at least once a life. In case if one has some reasons that prevent his making Hajji, he has to find one who will make it for him. One way or another Hajji has to be made, otherwise Muslim won't be recognized as one who love and respect Allah.
It is also an obligation for all Muslims is keeping a fast. That fast is called Ramadan and it lasts for a month. All the Muslims congratulate each other with beginning of Ramadan and wish each other strength and patience. During Ramadan it is forbidden drinking, smoking and eating from the sunrise till the sunset.