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Islam is an Abrahamic, monotheistic religion. All of its teachings and beliefs are written out in the Quran (also spelled Qur'an or Koran), the holy scripture of Islam. Believers of Islam are called Muslims which means "submitter to God". They believe that the Quran was spoken to Muhammad by the angel Jibril, and that it is the word of Allah. They view Muhammad as a prophet and messenger of God. Other beliefs and rules about what Muslims should do come from reports of what Muhammad taught or hadith.
According to Islamic tradition, there are five basic things that Muslims should do. They are called "The Five Pillars of Islam":
Tawheed: The Testimony (faith in English) is the core of the Muslim belief that there is no god but Allah himself, and that Muhammad is his last messenger.
Salaat: Muslims pray five times per day, at special times of the day. When they pray, they face Kaaba, a large cubic structure located at the holy city of Mecca. Salat is namaz in Persian, Turkish and Urdu. Shia Muslims can pray the afternoon and evening prayers right after each other.[2]
Zakat: Muslims who have money must give a percentage of the money which it's still with them for a year 1/40th of their money (charity in English) to help people who do not have money or need help.
Sawm or Siyam: Fasting during Ramadan, the ninth month of the Islamic year. Muslims do not eat or drink from dawn till sunset for one lunar month. After Ramadan, there is a holiday called Eid al-Fitr (which means "festival of end-fast" in English). On Eid al-Fitr, Muslims usually go to the mosque in the morning for a special religious service, and then have a party with families and friends.
Hajj (Pilgrimage in English): During the month of Zulhejja, the 12th month of the Islamic Calendar is the pilgrimage season where many Muslims go to Mecca, the holiest city of Islam. However, if a Muslim is financially unable to perform the Hajj, it is not necessary for them to do so. Those who possess great financial capacity were the most obligated to perform the Hajj.
https://simple.wikipedia.org/wiki/Islam
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In Islam, Jannah, lit. "garden", is the final abode of the righteous and the Islamic believers
According to the Quran, the basic criterion for salvation in the afterlife is the belief in the oneness of God (tawḥīd), Angels of God, revealed books of God, all messengers of God, as well as repentance to God, and doing good deeds.
https://en.wikipedia.org/wiki/Jannah
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Sin is an important concept in Islamic ethics. Muslims see sin as anything that goes against the commands of God (Allah), a breach of the laws and norms laid down by religion.[1] Islam teaches that sin is an act and not a state of being. It is believed that God weighs an individual's good deeds and against his or her sins on the Day of Judgement and punishes those individuals whose evil deeds outweigh their good deeds. These individuals are thought to be sentenced to afterlife in the fires of جهنم jahannam (Hell).