Sayyiduna Buraydah (may Allah be pleased with him) said that at the most, when the Prophet (peace and blessings be upon him) laughed, it was only so much that we could see his (peace and blessings be upon him) ruba'iyah teeth (the teeth beside the canines).
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Bashir bin al-Muhajir except Hatim."
Hadith Referenceالمعجم الأوسط / باب الميم / 8157
Hadith Gradingمحدثین:رجاله رجال الصحيح
Hadith Takhrij«قال الهيثمي: رجاله رجال الصحيح «مجمع الزوائد ومنبع الفوائد، ج 8، ص 282»»