(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." (ID)
Reference (ID): Sunan an-Nasa'i 3793 (ID)
In-book reference (ID): Book 35, Hadith 33 (ID)
English translation (ID): Vol. 4, Book 35, Hadith 3824 (ID)