It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "When a man sneezes and says 'Al-hamdu lillah' (All praise is for Allah), the angels say: 'Rabbil-'alamin' (the Lord of the worlds). Then when he says 'Rabbil-'alamin', the angels say: 'Rahimakallah' (May Allah have mercy on you)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ata bin al-Sa'ib as a marfu' report (attributed to the Prophet) except Sabbah bin Yahya."
It is like this in the Dar al-Haramayn printed edition, and the editor indicated that it is also like this in the manuscript, and that the correct form is "al-Muzani".
Hadith Referenceالمعجم الأوسط / باب الجيم / 3371
Hadith Gradingمحدثین:إسناده لا بأس به
Hadith Takhrij«قال ابن حجر: سند لا بأس به «فتح الباري شرح صحيح البخاري، ج 10، ص 615»» «أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 305، والطبراني فى «الكبير» برقم: 12284»