' Ali narrated that the Messenger of Allah (s. a. w) said: 'A slave (of Allah) shall not believe until he believes in four: The testimony of La Ilaha Illallah, and that I am the Messenger of Allah whom He sent with the Truth, and he believes in the death, and he believes in the Resurrection after death, and he believes in Al-Qadar." Another chain reports a similar narration.
Jami at-Tirmidhi 2145
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