'Whoever swears an oath and says In sha' Allah, he will have made an exception."(2)  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ حَلَفَ فَقَالَ إِنْ شَاءَ اللَّهُ فَلَهُ ثُنْيَاهُ  

"Whoever swears an oath and says In sha' Allah, if he wishes he may go ahead and if he wishes he may not, without having broken his oath."  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ حَلَفَ وَاسْتَثْنَى إِنْ شَاءَ رَجَعَ وَإِنْ شَاءَ تَرَكَ غَيْرُ حَانِثٍ  

"Whoever swears an oath and says In sha' Allah, will never break his oath."  

مَنْ حَلَفَ وَاسْتَثْنَى فَلَمْ يَحْنَثْ