(29) باب فِي التَّنَاجِي
`Abd Allah (b. Mas`ud) reported the Messenger of Allah (ﷺ) as saying:
Two persons should not talk privately ignoring the third, for that will grieve him. (ID)
Reference (ID): Sunan Abi Dawud 4851 (ID)
In-book reference (ID): Book 43, Hadith 79 (ID)
English translation (ID): Book 42, Hadith 4833 (ID)