The Repentance - 9:109 Better is he who builds his structure on the approval of Allah and on righteousness, or he who builds his structure on the edge of an abyss and tumbles with it into the Fire of Hell? Allah does not guide a wrongdoing people.
Those who built their structures on the edge of a cliff; those who belied the signs of Allah:

The Heights/7:8 On that Day the scales will be true. Those whose scales are heavy are those who have succeeded.
The Heights/7:9 And those whose scales are light are those who have lost their character by being unjust against Our signs.