(18) باب مَنْ حَلَفَ فَاسْتَثْنَى
It was narrated from Ibn 'Umar that the Prophet said:
"Whoever swears an oath and says: 'If Allah wills', then if he wishes he may go ahead, and if he wishes he may not, without having broken his oath." (ES)
Reference (ES): Sunan an-Nasa'i 3793 (ES)
In-book reference (ES): Book 35, Hadith 33 (ES)
English translation (ES): Vol. 4, Book 35, Hadith 3824 (ES)