When the deputation of "Abd al-Qais came to the Messenger of Allah (ﷺ), he commanded them to believe in Allah. He asked : Do you know what faith in Allah is? They replied : Allah and his Apostle know best. He said: It includes the testimony that there is no god but Allah, and that Muhammad is Allah's Apostle, the observance of the prayer, the payment of zakat, the fasts of Ramadan, and your giving a fifth of the booty.
Reference: Sunan Abi Dawud 4677 In-book : Book 42, Hadith 82 English translation : Book 41, Hadith 4660
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