This is a people that have passed away...
This is a people that have passed away; they shall have what they earned and you shall have what you earn, and you shall not be called upon to answer for what they did." (Holy Qur'an 2:134) I asked, "Do you read Tusaloon (the Arabic word for Questioned) with Dammah (the vowel point upon the letter ta) or with Tasaloon with Fathah (the vowel) point a)?" He said, "Tusaloon, with Dammah." I said, Thanks be to Allah, if it was with Fathah, then there would be no research.
As it is written with Dammah, then it means that Allah - praise be to Him - will not make us accountable for what they have done, similarly, He, the Most High, said: "Each soul is pledged to whatever it has earned." (Holy Qur'an 74:38) Also He said: "There is nothing for man except what he has strived for." (Holy Qur'an 53:39). And the Holy Qur'an urged us to know about the earlier nations and to learn lessons from their histories.
Also, Allah told us about the Pharaohs, Haman, Nimrod, Quaroon, and about the early prophets and their nations, not for the sake of pleasure, but to show us what is right and what is wrong. As for your question as to why I want to know all that? It is important for me to know all that. Firstly, to know who is the friend of Allah so that I may befriend him, and to know who is the enemy of Allah, so that I may oppose him, and that is what the Qur'an asked me, or indeed, ordered me to do.
Secondly, it is important for me to know how I should worship Allah and draw near to Him by obeying His commands, in the way He - the Majesty - wants them to be, not as Malik or Abu Hanifah or any other interpreter of Islam wants them to be. I found that Malik does not prefer the saying of "In the name of Allah the most Merciful and the most Compassionate" during the prayers, whereas Abu Hanifah considers it a "must". Others say that the prayers are not valid without them.
Because prayers are a pillar of Islam, if accepted other deeds would be accepted; but if they were rejected, other deeds would be rejected. Therefore, I do not want my prayers to be invalid. The Shiites say that during the ablution we must rub our feet with wet hands, whereas the Sunnis say that we must wash them. But when we read the Holy Qur'an we find "rub your hands and feet" which is clear about the rubbing.