(43) باب الاِسْتِثْنَاءِ .
It was narrated that Abu Hurairah said:
"The Messenger of Allah said: 'Whoever swears an oath and says: "If Allah wills, then he has made an exception."'" (ES)
Reference (ES): Sunan an-Nasa'i 3855 (ES)
In-book reference (ES): Book 35, Hadith 95 (ES)
English translation (ES): Vol. 4, Book 35, Hadith 3886 (ES)