(31) بَاب إِسْلَامُ سَعْدِ بْنِ أَبِي وَقَّاصٍ رَضِيَ اللَّهُ عَنْهُ
Narrated Abu 'Is-haq Saud bin Abi Waqqas:
None embraced Islam, except on the day I embraced it. And for seven days I was one of the three persons who were Muslims (one-third of Islam).
Reference: Sahih al-Bukhari 3858
In-book reference: Book 63, Hadith 84
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 58, Hadith 198