( b) To avoid stumbling, on what do we need to be focused? Injustices on the part of fellow believers can be stumbling blocks.
وَعِنْدَمَا بَلَغَ ٱلْعِشْرِينَ مِنْ عُمْرِهِ ،‏ كَانَ قَدْ أَصْبَحَ فَاتِحًا عَادِيًّا وَخَادِمًا مُسَاعِدًا .‏