(5) باب الْمُنْفِقِ سِلْعَتَهُ بِالْحَلِفِ الْكَاذِبِ
It was narrated from Abu Hurairah that the Prophet said:
"Taking oaths may help you to make a sale but it takes (blessing) away from the earnings "(Sahih )
Reference: Sunan an-Nasa'i 4461
In-book reference: Book 44, Hadith 13
English translation: Vol. 5, Book 44, Hadith 4466