Hadith 17:671
Yazid ibn Harun narrated to us, from Sulayman al-Taymi, from Anas ibn Malik, who said: Two men sneezed in the presence of the Prophet, may Allah bless him and grant him peace. He blessed one of them but did not bless the other. It was said, "O Messenger of Allah, two men sneezed in your presence; you blessed one of them and did not bless the other." He said, "This one praised Allah, while this one did not praise Allah."
حدثنا يزيد بن هارون عن سليمان التيمي عن أنس بن مالك قال عطس رجلان عند النبي صلى الله عليه وسلم فشمت أو شمت أحدهما ولم يشمت الآخر فقيل يا رسول الله عطس عندك رجلان فشمت أحدهما ولم تشمت الآخر فقال إن هذا حمد الله إن وهذا لم يحمد الله