Cain and Abel
Cain and Abel are the sons of the Prophet Adam (peace be upon him) from Eve, and Eve was pregnant with male and female twins in each womb, as Eve gave birth in her first womb: Cain and his female twin, and then she gave birth in the other womb: Cain was a farmer and plowed the land, while Abel was a shepherd who worked as a shepherd.
The story of Cain and Abel is proven in the Holy Quran, so you can start reading the verses that talk about their story in front of your children, which is what is proven about them, and there are details in their story that are not proven in the Quran and Sunnah, but many scholars mentioned in their books, namely:
Eve used to give birth to male and female twins in each womb, and the male would marry his sister who was born in a womb other than the one from which he was born, and Adam and Eve - peace be upon them - had two sons, namely: Adam (peace be upon him) wanted to marry Abel to Cain's sister, but Cain refused, and wanted to be the one to marry his sister, arguing that he was more entitled to her than Abel.
Abel tried to convince him that this was God's command, and that it was not permissible for him to marry his sister who was born with him, but Cain did not respond to him, so they decided to offer a sacrifice to God Almighty, and whoever God accepts his sacrifice will have the right to her, so God accepted Abel's sacrifice because he was pious and obedient to God Almighty, but not Cain's because he was disgruntled and rejected the command of God -Almighty Almighty.
The books of some commentators state that Eve had conceived Cain and his sister Aqlima in Paradise, and her pregnancy was easy and soft, so Eve did not suffer from the difficult symptoms of pregnancy such as fever, fatigue, and divorce, while her pregnancy with Abel and his sister Labuda was after their descent to earth after they ate from the tree, and she suffered from fever, fatigue, and divorce in their pregnancy, but her pregnancy with Abel and his sister Labuda was after they came down to earth after eating from the tree.
After Cain and Abel refused to marry Abel's sister, the verdict between them was that they should offer sacrifices to Allah (swt), and whoever Allah accepts his offering will have the right to marry Aqlima, so Allah accepted Abel's offering because he was pious and obedient to Allah (swt), and He did not accept Cain's offering, as he was disgruntled, rejected Allah's command, and was not one of the pious.
When Cain and Abel grew up, God ordered Adam (peace be upon him) to marry Cain to Labuda, and Abel to Aqlima, and Aqlima was more beautiful than Labuda.
Cain did not accept God's order and said: “He is more worthy of his sister than Labuda: Cain did not accept God's command and said: “He is more entitled to his sister than Abel, because they were born in Paradise, and Abel and his sister were born on earth.”[2] Note that this is mentioned in the books of many scholars, but it is not proven in the texts of the Qur'an and the Sunnah.
Cain became angry with Abel and tried to kill him. Abel tried to tell him that he was not the reason why his offering was not accepted, and that the reason for the acceptance of offerings before Allah (swt) is piety and obedience to His commands. He also tried to remind him of the punishment of the murderer, which is the fire, and the loss in this world and the hereafter.
Cain did not heed the advice of his brother Abel, and his evil self tempted him to kill his brother, so he killed him, then he became remorseful for what he had done, and he wandered around the earth trying to find a way to hide the body of his murdered brother. God sent him two ravens, who argued before him, and one of them killed the other, so the raven dug a hole in the ground and buried the raven that he had killed.
Cain did as the crow did, and he soon felt remorse for his deed, and how he was unable to cover his brother's body, and that crow taught him how to cover and hide it, and he did not gain any benefit from killing his brother except that he received God's anger and the wrath of his parents and brothers.