Sahih al Bukhari 33

Narrated Abu Huraira: The Prophet (ﷺ) said, "The signs of a hypocrite are three:

1. Whenever he speaks, he tells a lie.

2. Whenever he promises, he always breaks it (his promise ).

3. If you trust him, he proves to be dishonest. (If you keep something as a trust with him, he will not return it)

Sahih al Bukhari 33
Book 2, Hadith 26