Quran. and for Shia after that nahjolbalaghah and sahife sajjadieh.
What did Muhammad ibn Musa al-Khwarizmi?
do you mean what did he do well if you did he pooped on a log and smelt it and ate again and died
Two variables related in such a way that their values always have a constant ratio directly vary.
Who was the only Prophet who could talk directly to Allah almighty?
Prophet Musa (Moses), peace be upon him.