Abu Hurairah (RAA) narrated that the Messenger of Allah (ﷺ) said:
"There are three signs of a hypocrite: when he speaks, he tells lies; when he makes a promise, he breaks it; and when he is entrusted, he betrays his trust." Agreed upon. (JA)
English reference (JA): Book 16, Hadith 1528 (JA)
Arabic reference (JA): Book 16, Hadith 1485 (JA)