Qur'an 5:26 · Al-Maaida

قَالَ فَإِنَّهَا مُحَرَّمَةٌ عَلَيْهِمْ ۛ أَرْبَعِينَ سَنَةًۭ ۛ يَتِيهُونَ فِى ٱلْأَرْضِ ۚ فَلَا تَأْسَ عَلَى ٱلْقَوْمِ ٱلْفَٰسِقِينَ

(26) [Allāh] said, "Then indeed, it is forbidden to them for forty years [in which] they will wander throughout the land. So do not grieve over the defiantly disobedient people."