(33) باب زِيَادَةِ الإِيمَانِ وَنُقْصَانِهِ
Narrated Anas:
The Prophet (ﷺ) said, "Whoever said "None has the right to be worshipped but Allah and has in his heart good (faith) equal to the weight of a barley grain will be taken out of Hell. And whoever said: "None has the right to be worshipped but Allah and has in his heart good (faith)equal to the weight of a wheat grain will be taken out of Hell. And whoever said, "None has the right to be worshipped but Allah and has in his heart good (faith) equal to the weight of an atom will be takenout of Hell."
Reference: Sahih al-Bukhari 44
In-book reference: Book 2, Hadith 37
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 2, Hadith 43