Sahih Muslim | Book 1 | Hadith Number 114

Narrated by 'Uqba b. Mukarram al-'Ami
'Uqba b. Mukarram al-'Ami reported that he heard 'Ala' b. 'Abdur-Rahman narrating this hadith with this chain of transmitters and he said: Three are the signs of a hypocrite, even if he observed fast and prayed and asserted that he was a Muslim.