Salaryman had sixty wives and he said: I will visit each one of them every night, and every one of them will become pregnant and give birth to a male child who will be a horseman and fight in the cause of Allah. But (it so happened) that none of them became pregnant except one, but she gave birth to an incomplete child. Thereupon Messenger of Allah ﷺ said: Had he said Insha' Allah (if God so wills), then every one of them would have given birth to a child who would have been a horseman and fought in the cause of Allah  

كَانَ لِسُلَيْمَانَ سِتُّونَ امْرَأَةً فَقَالَ لأَطُوفَنَّ عَلَيْهِنَّ اللَّيْلَةَ فَتَحْمِلُ كُلُّ وَاحِدَةٍ مِنْهُنَّ فَتَلِدُ كُلُّ وَاحِدَةٍ مِنْهُنَّ غُلاَمًا فَارِسًا يُقَاتِلُ فِي سَبِيلِ اللَّهِ فَلَمْ تَحْمِلْ مِنْهُنَّ إِلاَّ وَاحِدَةٌ فَوَلَدَتْ نِصْفَ إِنْسَانٍ فَقَالَ رَسُولُ اللَّهِ ﷺ لَوْ كَانَ اسْتَثْنَى لَوَلَدَتْ كُلُّ وَاحِدَةٍ مِنْهُنَّ غُلاَمًا فَارِسًا يُقَاتِلُ فِي سَبِيلِ اللَّهِ  

I will certainly have intercourse with seventy wives during the night, and every wife amongst them will give birth to a child, who will fight in the cause of Allah. It was said to him: Say:" Insha' Allah" (God willing), but he did not say so and forgot it. He went round them but none of them give birth to a child except one woman and that too was an incomplete person. Upon this Messenger of Allah ﷺ said: If he had said" Insha' Allah." he would not have failed, and his desire must have been fulfilled.  

رَسُولُ اللَّهِ ﷺ لَوْ قَالَ إِنْ شَاءَ اللَّهُ لَمْ يَحْنَثْ وَكَانَ دَرَكًا لِحَاجَتِهِ  

"Sulaiman said: 'I will certainly go around to ninety women tonight, each of whom will bear a child who will fight in the cause of Allah.' It was said to him: 'Say: If Allah wills' but he did not say it. He went around to them but none of them bore a child except for one woman who bore half a person." The Messenger of Allah said: "If he had said: 'If Allah wills,' he would not have broken his vow, and this would have been a means to help him to get what he wanted."  

سُلَيْمَانُ لأَطُوفَنَّ اللَّيْلَةَ عَلَى تِسْعِينَ امْرَأَةً تَلِدُ كُلُّ امْرَأَةٍ مِنْهُنَّ غُلاَمًا يُقَاتِلُ فِي سَبِيلِ اللَّهِ فَقِيلَ لَهُ قُلْ إِنْ شَاءَ اللَّهُ فَلَمْ يَقُلْ فَطَافَ بِهِنَّ فَلَمْ تَلِدْ مِنْهُنَّ إِلاَّ امْرَأَةٌ وَاحِدَةٌ نِصْفَ إِنْسَانٍ فَقَالَ رَسُولُ اللَّهِ ﷺ لَوْ قَالَ إِنْ شَاءَ اللَّهُ لَمْ يَحْنَثْ وَكَانَ دَرَكًا لِحَاجَتِهِ  

"Sulaiman said: 'I will certainly go around to ninety women tonight, each of whom will bear a child who will fight in the cause of Allah.' It was said to him: 'Say: If Allah wills' but he did not say it. He went around to them but none of them bore a child except for one woman who bore half a person." The Messenger of Allah said: "If he had said: 'If Allah wills,' he would not have broken his vow, and this would have been a means to help him to get what he wanted." (Using translation from Nasāʾī 3856)   

قَالَ رَسُولُ اللهِ ﷺ قَالَ سُلَيْمَانُ بْنُ دَاوُدَ لَأَطُوفَنَّ اللَّيْلَةَ بِمِائَةِ امْرَأَةٍ تَلِدُ كُلُّ امْرَأَةٍ مِنْهُنَّ غُلَامًا يُقَاتِلُ فِي سَبِيلِ اللهِ قَالَ وَنَسِيَ أَنْ يَقُولَ إِنْ شَاءَ اللهُ فَأَطَافَ بِهِنَّ قَالَ فَلَمْ تَلِدْ مِنْهُنَّ امْرَأَةٌ إِلَّا وَاحِدَةٌ نِصْفَ إِنْسَانٍ فَقَالَ رَسُولُ اللهِ ﷺ لَوْ قَالَ إِنْ شَاءَ اللهُ لَمْ يَحْنَثْ وَكَانَ دَرَكًا لِحَاجَتِهِ