What is the correct scientific explanation for the different Quranic readings, such as the two readings of "qātala" (fought) and "qutila" (were killed) in verse 146 of Surat Aal Imran, and what is the best book that explains the compilation and arrangement of the Holy Quran and the reason for adopting the narration of Hafs from Asim, in order to ward off misconceptions and understand the Book of Allah?

All established Quranic readings (Qira'at) have no contradiction in meaning among them; rather, they represent a diversity and complementarity that demonstrate the miraculous nature of the Qur'an, the comprehensiveness of its meanings, and the ease of its recitation. This is an established practice, received through transmission from the Prophet, peace and blessings be upon him, and affirmed through narration. An example of this is the Almighty's saying: {And how many a prophet fought with him numerous devoted worshippers} [Al-Imran: 146], where reciters differed on "قَاتَلَ مَعَهُ" (fought with him) between the reading "قُتِلَ مَعَهُ" (was killed with him) and the reading "قَاتَلَ مَعَهُ" (fought with him), and both add diversity and richness to the meaning.