How Is It Possible That The Law Of Inheritance Was Misunderstood For 1400 Years?
If it is clear to you that there was error in the understanding of the law earlier and what was the nature of the error then you may understand it. The law is self expalanroty in closer words. Still there is always a chance that some one misunderstnd a closer thing. In this case Hazrat Umar committed a mistake and others paid little attention to it, as it was a mathematical problem and Arabs were not very interested in mathematics, except for Abdullah bin Abbas who took it right but being a young boy didn’t dare to opposed Hazrat Umer’s understanding. Once the precedent was set the others just followed it despite the fact that the prescribed shares were indivisible according to their understanding.