Islam is a beautiful and simple religion in it's purest form: completely based on the Quran, a text considered by Muslims as the final revelation of God, which was revealed to the Prophet Mohammed over a 22 year span in the early 7th century. As with many religions, mainstream Muslims have clouded the religion with rituals and sayings collected in what's know as the Hadiths.
The Hadiths are mainly a collection of rituals, sayings, and rulings by scholars claimed to be from the Prophet Mohammed that was recorded hundreds of years after his death. Mainstream Muslims typically accept the Hadiths as another religious text paired with the Quran. However, their text the Quran is explicit in the fact that it was to be the final and complete text of God.
The Quran was revealed to Mohammed by the Angel Gabriel between the years of 610 AD to 632 AD and was intended to be the last, complete testament of God to the people. It includes 144 chapters known as surahs and the message is very simple: worship God alone and completely submit to His will. The Quran does not condone killing or many of the other stereotypical and unlearned views of the religion of Islam, but it's full of peace, love for others, and using one's reason to interpret the world around the believer.
The general population's understanding of Muslims is based off of the Hadith's rituals, not solely on the Quran's teachings. When Islam was revealed, it's followers were intended to only follow the Quran.
One common perception of Muslims is that they are obligated to pray 5 times a day. This strict teaching of 5 prayer times a day is Hadith. When strictly following the Quran, believers are instructed to pray morning, noon, and night.
A visible symbol that people associate with Islam is the females of the religion wearing the head covering known as hijab where only their face and hands show in public. This is a completely Hadith-based mandate. The Quran specifically calls for both men and women to be modest not only in dress, but also in behavior.
can i ask sister what hadith are you reading and could you please tell me which bit of the quran and hadith you are concerned about.