Surah Al-Baqarah, Verse 149

وَمِنۡ حَيۡثُ خَرَجۡتَ فَوَلِّ وَجۡهَكَ شَطۡرَ ٱلۡمَسۡجِدِ ٱلۡحَرَامِۖ وَإِنَّهُۥ لَلۡحَقُّ مِن رَّبِّكَۗ وَمَا ٱللَّهُ بِغَٰفِلٍ عَمَّا تَعۡمَلُونَ١٤٩

wamin ḥaythu kharajta fawalli wajhaka shaṭra l-masjidi l-ḥarāmi wa-innahu lalḥaqqu min rabbika wamā l-lahu bighāfilin ʿammā taʿmalūna

So from wherever you go out [for prayer, O Muḥammad], turn your face toward al-Masjid al-Ḥarām, and indeed, it is the truth from your Lord. And Allāh is not unaware of what you do.