I will have an intercourse with seventy wives during the night; all of them will give birth to a male child who will fight in the cause of Allah. His companion or the ang I said to him: Say," If God wills." But he (Hadrat Sulaimin) did not say so, and he forgot it. And none of his wives gave birth to a child, but one who gave birth to a premature child. Messenger of Allah ﷺ said: Had he said Insha' Allah (if God so will). he would not have failed and his desire would have been materialised.  

عَنِ النَّبِيِّ ﷺ قَالَ قَالَ سُلَيْمَانُ بْنُ دَاوُدَ نَبِيُّ اللَّهِ لأَطُوفَنَّ اللَّيْلَةَ عَلَى سَبْعِينَ امْرَأَةً كُلُّهُنَّ تَأْتِي بِغُلاَمٍ يُقَاتِلُ فِي سَبِيلِ اللَّهِ فَقَالَ لَهُ صَاحِبُهُ أَوِ الْمَلَكُ قُلْ إِنْ شَاءَ اللَّهُ فَلَمْ يَقُلْ وَنَسِيَ فَلَمْ تَأْتِ وَاحِدَةٌ مِنْ نِسَائِهِ إِلاَّ وَاحِدَةٌ جَاءَتْ بِشِقِّ غُلاَمٍ فَقَالَ رَسُولُ اللَّهِ ﷺ وَلَوْ قَالَ إِنْ شَاءَ اللَّهُ لَمْ يَحْنَثْ وَكَانَ دَرَكًا لَهُ فِي حَاجَتِهِ  

I will go round in the night to my ninety wives, and every one of them will give birth to a child (who will grow up) as a horseman and fight in the cause of Allah His companions said to him: Say" Insha' Allah." but he did not say Inshii' Allah. He went round all of them but none of them became pregnant but one, and she gave birth to a premature child. And by Him in Whose hand is the life of Muhammad, if he had said, Insha' Allah (his wives would have given birth to the children who would all have grown up into horsemen and fought in the way of Allah).  

عَنِ النَّبِيِّ ﷺ قَالَ قَالَ سُلَيْمَانُ بْنُ دَاوُدَ لأَطُوفَنَّ اللَّيْلَةَ عَلَى تِسْعِينَ امْرَأَةً كُلُّهَا تَأْتِي بِفَارِسٍ يُقَاتِلُ فِي سَبِيلِ اللَّهِ فَقَالَ لَهُ صَاحِبُهُ قُلْ إِنْ شَاءَ اللَّهُ فَلَمْ يَقُلْ إِنْ شَاءَ اللَّهُ فَطَافَ عَلَيْهِنَّ جَمِيعًا فَلَمْ تَحْمِلْ مِنْهُنَّ إِلاَّ امْرَأَةٌ وَاحِدَةٌ فَجَاءَتْ بِشِقِّ رَجُلٍ وَايْمُ الَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ لَوْ قَالَ إِنْ شَاءَ اللَّهُ لَجَاهَدُوا فِي سَبِيلِ اللَّهِ فُرْسَانًا أَجْمَعُونَ  

"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  

[Machine] "Indeed, the Prophet ﷺ said, 'Sulaiman, son of Dawud, took an oath that he would spend the night with ninety women, each of whom would give birth to a boy who would fight in the cause of Allah.' His companion or the angel said to him, 'Say, "If Allah wills."' But he forgot and spent that night with ninety women, and none of them gave birth except one with the partial birth of a boy.' The Prophet ﷺ said, 'If he had said "If Allah wills," he would not have violated his oath and he would have fulfilled his need.'"  

أَنَّ النَّبِيَّ ﷺ قَالَ «حَلَفَ سُلَيْمَانُ بْنُ دَاوُدَ لَيَطُوفَنَّ اللَّيْلَةَ بِتِسْعِينَ امْرَأَةً تَلِدُ كُلُّ امْرَأَةٍ مِنْهُنَّ غُلَامًا يُقَاتِلُ فِي سَبِيلِ اللَّهِ فَقَالَ لَهُ صَاحِبُهُ أَوِ الْمَلِكُ قُلْ إِنْ شَاءَ اللَّهُ فَنَسِيَ وَأَطَافَ تِلْكَ اللَّيْلَةَ بِتِسْعِينَ امْرَأَةً فَمَا جَاءَتِ امْرَأَةٌ مِنْهُنَّ إِلَّا وَاحِدَةٌ بِشِقِّ غُلَامٍ» فَقَالَ النَّبِيُّ ﷺ «لَوْ قَالَ إِنْ شَاءَ اللَّهُ لَمْ يَحْنَثْ وَكَانَ أَدْرَكَ حَاجَتَهُ»