This is what God Almighty says in Chapter number 54 (Al Qamar - القمر - The Moon), in verse number one:
"The Hour has come closer, and the moon has split"
Man landend on the Moon and brought lunar surface samples back to earth in 1969. The vehicle Eagle left lunar surface on 21. July 1969 at 17:54:01 UTC. This coressponds to the 6th of Jamaadah al Awal (6th month in the Islamic calendar) of the year 1389 Hijri (indicating 1389 Lunar years from the day Prophet Muhammad, peace upon Him, migrated from Mecca to Madina) which means landing on the Moon occured in the year that completes 1390 years to the Hijra (the migration) according to the Islamic Calendar. This is the only verse in the Holy Quran that says something about Moon splitting. The verb Inshaqa (split) (إنشق) is used in other contexts in the Holy Quran to refer to splitting of earth as by water making rivers. This verse is the 1390th verse from the end of the Holy Quran, in other words, from this verse to the end of the Holy Quran there are exactly 1389 verses. 1389 verses from this verse, the Holy Quran ends. At the same time, 1389 years from Holy Quran's revelation, man would land on the Moon and bring, with his hands, lunar soil back to earth.
And to increase our confidence let us consider what God says right after this verse:
"ٱقْتَرَبَتِ ٱلسَّاعَةُ وَٱنشَقَّ ٱلْقَمَرُ ﴿١﴾ وَإِن يَرَوْا۟ ءَايَةًۭ يُعْرِضُوا۟ وَيَقُولُوا۟ سِحْرٌۭ مُّسْتَمِرٌّۭ ﴿٢﴾ وَكَذَّبُوا۟ وَٱتَّبَعُوٓا۟ أَهْوَآءَهُمْ ۚ وَكُلُّ أَمْرٍۢ مُّسْتَقِرٌّۭ ﴿٣﴾ وَلَقَدْ جَآءَهُم مِّنَ ٱلْأَنۢبَآءِ مَا فِيهِ مُزْدَجَرٌ ﴿٤﴾ حِكْمَةٌۢ بَـٰلِغَةٌۭ ۖ فَمَا تُغْنِ ٱلنُّذُرُ ﴿٥﴾"
" 2. But whenever they see a miracle they turn aside and say, This is well-devised magic. 3. And they have treated the prophets as impostors, and follow their own lusts; but everything is unalterably fixed. 4. A message of prohibition had come to them - 5. Consummate wisdom - but warners profit them not."
- The Holy Quran
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