I said, "O Messenger of Allah ﷺ! Which mosque was built first?" He replied, "Al-Masjid-ul-Haram." I asked, "Which (was built) next?" He replied, "Al-Masjid-ul-Aqs-a (i.e. Jerusalem)." I asked, "What was the period in between them?" He replied, "Forty (years)." He then added, "Wherever the time for the prayer comes upon you, perform the prayer, for all the earth is a place of worshipping for you."
قُلْتُ يَا رَسُولَ اللَّهِ أَىُّ مَسْجِدٍ وُضِعَ أَوَّلُ قَالَ الْمَسْجِدُ الْحَرَامُ قُلْتُ ثُمَّ أَىٌّ قَالَ ثُمَّ الْمَسْجِدُ الأَقْصَى قُلْتُ كَمْ كَانَ بَيْنَهُمَا قَالَ أَرْبَعُونَ ثُمَّ قَالَ حَيْثُمَا أَدْرَكَتْكَ الصَّلاَةُ فَصَلِّ وَالأَرْضُ لَكَ مَسْجِدٌ