Narrated Sufyan ibn Asid al-Hadrami: I heard the Messenger of Allah ﷺ say: It is great treachery that you should tell your brother something and have him believe you when you are lying.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
This narration is weak, but from other authentic ahadith it is known that deceiving a Muslim brother is a very grave and heinous sin.
It is stated in Sahih Muslim: (al-yamin ‘ala niyyati al-mustahlif).
In an oath, the meaning that will be considered valid is that which is intended by the one who is making another swear, not by the one taking the oath.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 4971