Sahih al-Bukhari
Oneness, Uniqueness of Allah (Tawheed) — Hadith #7509
إِذَا كَانَ يَوْمُ الْقِيَامَةِ شُفِّعْتُ، فَقُلْتُ يَا رَبِّ أَدْخِلِ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ خَرْدَلَةٌ. فَيَدْخُلُونَ، ثُمَّ أَقُولُ أَدْخِلِ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ أَدْنَى شَىْءٍ "
The chain (isnad) appears to be missing from this record. Under review.
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.
إِذَا كَانَ يَوْمُ الْقِيَامَةِ شُفِّعْتُ، فَقُلْتُ يَا رَبِّ أَدْخِلِ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ خَرْدَلَةٌ. فَيَدْخُلُونَ، ثُمَّ أَقُولُ أَدْخِلِ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ أَدْنَى شَىْءٍ ”