Volume 6, Book 60, Number 72:
Narrated Abu Wail:
‘Abdullah bin Masud said, “Allah’s Apostle said, ‘Whoever takes an oath when asked to do so, in
which he may deprive a Muslim of his property unlawfully, will meet Allah Who will be angry with
him.’ So Allah revealed in confirmation of this statement:–“Verily! Those who Purchase a small gain
at the cost of Allah’s Covenant and oaths, they shall have no portion in the Hereafter…” (3.77) Then
entered Al-Ash’ath bin Qais and said, “What is Abu ‘Abdur-Rahman narrating to you?” We replied,
‘So-and-so.” Al-Ash’ath said, “This Verse was revealed in my connection. I had a well in the land of
my cousin (and he denied my, possessing it). On that the Prophet said to me, ‘Either you bring for –
ward a proof or he (i.e. your cousin) takes an oath (to confirm his claim)’ I said, ‘I am sure he would
take a (false) oath, O Allah’s Apostle.’ He said, ‘If somebody takes an oath when asked to do so
through which he may deprive a Muslim of his property (unlawfully) and he is a liar in his oath, he
will meet Allah Who will be angry with him.’ “