insha allah in arabic:
The phrase إِنْ شَاءَ ٱللَّٰهُ (insha allah) means “If Allah wills.”. There are many hadith on it. This word exist in Quran as well,
And never say of anything, “Indeed, I will do that tomorrow,”[18:23] Except [when adding], “If Allah wills.” And remember your Lord when you forget [it] and say, “Perhaps my Lord will guide me to what is nearer than this to right conduct.”[18:24]
Copy insha allah in arabic Text:
وَقَالَ اللَّيْثُ حَدَّثَنِي جَعْفَرُ بْنُ رَبِيعَةَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ هُرْمُزَ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ “ قَالَ سُلَيْمَانُ بْنُ دَاوُدَ ـ عَلَيْهِمَا السَّلاَمُ ـ لأَطُوفَنَّ اللَّيْلَةَ عَلَى مِائَةِ امْرَأَةٍ ـ أَوْ تِسْعٍ وَتِسْعِينَ ـ كُلُّهُنَّ يَأْتِي بِفَارِسٍ يُجَاهِدُ فِي سَبِيلِ اللَّهِ، فَقَالَ لَهُ صَاحِبُهُ إِنْ شَاءَ اللَّهُ. فَلَمْ يَقُلْ إِنْ شَاءَ اللَّهُ. فَلَمْ يَحْمِلْ مِنْهُنَّ إِلاَّ امْرَأَةٌ وَاحِدَةٌ، جَاءَتْ بِشِقِّ رَجُلٍ، وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ، لَوْ قَالَ إِنْ شَاءَ اللَّهُ، لَجَاهَدُوا فِي سَبِيلِ اللَّهِ فُرْسَانًا أَجْمَعُونَ ”.
Narrated Abu Huraira:
Allah’s Messenger (ﷺ) said, “Once Solomon, son of David said, ‘(By Allah) Tonight I will have sexual intercourse with one hundred (or ninety-nine) women each of whom will give birth to a knight who will fight in Allah’s Cause.’ On that a (i.e. if Allah wills) but he did not say, ‘Allah willing.’ Therefore only one of those women conceived and gave birth to a half-man. By Him in Whose Hands Muhammad’s life is, if he had said, “Allah willing’, (he would have begotten sons) all of whom would have been knights striving in Allah’s Cause.”
Sahih al-Bukhari 2819
https://sunnah.com/bukhari:2819
https://sunnah.com/bukhari:3113
Web Source: https://en.wikipedia.org