Sahih Bukhari

Narrated Anas:I heard the Prophet (ﷺ) saying, ""On the Day of Resurrection I will intercede and say, ""O my Lord! Admit into Paradise (even) those who have faith equal to a mustard seed in their hearts."" Such people will enter Paradise, and then I will say, 'O (Allah) admit into Paradise (even) those who have the least amount of faith in their hearts."" Anas then said: As if I were just now looking at the fingers of Allah's Apostle