One should not take a span of land without having legitimate right to it, otherwise Allah would make him wear (around his neck) seven earths on the Day of Resurrection.
قَالَ رَسُولُ اللَّهِ ﷺ لاَ يَأْخُذُ أَحَدٌ شِبْرًا مِنَ الأَرْضِ بِغَيْرِ حَقِّهِ إِلاَّ طَوَّقَهُ اللَّهُ إِلَى سَبْعِ أَرَضِينَ يَوْمَ الْقِيَامَةِ