"Abdullah said: 'There are three (traits), whoever has them is a hypocrite: When he speaks, he lies; when he is entrusted with something, he betrays that trust; and when he makes a promise, he breaks it. Whoever has one of these (traits) then a trait of hypocrisy has not ceased in him, until he leaves it.'"
Reference: Sunan an-Nasa'i 5023 In-book : Book 47, Hadith 39 English translation : Vol. 6, Book 47, Hadith 5026
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