Hadith 8:193
Salim reported on his father's authority that God’s Messenger said, "If anyone takes any land without having a right he will be swallowed up seven earths deep on the day of resurrection.” Bukhari transmitted it.
عَن سَالم عَنْ أَبِيهِ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ أَخَذَ مِنَ الْأَرْضِ شَيْئًا بِغَيْرِ حَقِّهِ خُسِفَ بِهِ يَوْمَ الْقِيَامَةِ إِلَى سبع أَرضين» . رَوَاهُ البُخَارِيّ
Original Reference: Mishkat al-Masabih 2958