On the authority of his father, he said: The Jews used to sneeze in the presence of the Prophet, peace and blessings be upon him, hoping that he would say to them, "May Allah have mercy upon you." But he would say: "May Allah guide you and set your affairs in order." (1)

101 - Chapter: Concerning the one who sneezes and does not praise Allah

5039 - Ahmad ibn Yunus narrated to us, Zuhayr narrated to us (h)
And Muhammad ibn Kathir narrated to us, Sufyan informed us — the meaning [being the same] — they both said: Sulayman al-Taymi narrated to us, from Anas, who said: Two men sneezed in the presence of the Prophet, peace and blessings be upon him, and he said the prayer for mercy for one of them but not the other. He said: So it was said: O Messenger of Allah, peace and blessings be upon him, two men sneezed and you said the prayer for mercy for one of them — Ahmad said: or you said the prayer for mercy for one of them — and you left the other. He said: "Indeed, this one praised Allah, and this one did not praise Allah." (2)

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(1) Its chain of transmission is authentic. Sufyan: he is al-Thawri, and Abu Burda: he is 'Amir ibn 'Abdullah ibn Qays al-Ash'ari. And Hakim ibn al-Daylami — it is also said in his name: ibn al-Daylam — and both are correct.
It was also narrated by al-Tirmidhi (2937) via the route of 'Abd al-Rahman ibn Mahdi, and by al-Nasa'i in "al-Kubra" (9990) via the route of Mu'adh ibn Mu'adh, both from Hakim ibn al-Daylam, with this chain of transmission, and al-Tirmidhi said: This is a good authentic hadith.
It is in "Musnad Ahmad" (19586), and "Sharh Mushkil al-Athar" by al-Tahawi (4014) and (4015).

(2) Its chain of transmission is authentic. Zuhayr: he is Ibn Mu'awiyah ibn Hudayj, and Sufyan: he is al-Thawri, and Sulayman al-Taymi: he is Ibn Tarkhan.
It was also narrated by al-Bukhari (6221) from Muhammad ibn Kathir, from Sufyan al-Thawri, with this chain of transmission.
It was also narrated by al-Tirmidhi (2942) from Ibn Abi 'Umar, from Sufyan, with it.
It was also narrated by al-Bukhari (6225), Muslim (2991), Ibn Majah (3713), and al-Nasa'i in "al-Kubra" (9979) via multiple routes from Sulayman al-Taymi, with it.
It is in "Musnad Ahmad" (11962), and "Sahih Ibn Hibban" (600) and (601).
Al-Khattabi said in "Ma'alim al-Sunan" 4/141-142: It is said: shammata and sammata have the same meaning, which is: to supplicate for mercy for the one who sneezes. And in it is a clarification that saying the prayer for mercy for the one who did not praise Allah is not obligatory. =