Sneezing, what the sneezer says and what is said to him

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that he said: When the Prophet (peace and blessings be upon him) sneezed, he would cover his face and keep his voice low.
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains Isma'il bin Amr al-Bajali and Mindal bin Ali; both were declared trustworthy, while a group declared them both da'if (weak). The rest of its narrators are the narrators of the Sahih.

It is narrated from Sayyiduna Abdullah bin Ja'far (son of Sayyiduna Ja'far (may Allah be pleased with him), who is Dhu al-Janahayn, i.e. the one with two wings), that when the Prophet (peace and blessings be upon him) sneezed, he would praise Allah. It would be said to him: "May Allah Almighty have mercy on you," and he would say: "May Allah Almighty keep you firm upon guidance and set your affairs right."
Ahmad and al-Tabarani recorded it; its chain contains Ibn Lahi'ah, who is hasan al-hadith (fair in hadith) despite some weakness in him. The rest of its narrators are thiqat (trustworthy).

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that he said: We were sitting with the Prophet (peace and blessings be upon him). He (peace and blessings be upon him) sneezed and praised Allah Almighty. The people said: "May Allah Almighty have mercy on you." The Prophet (peace and blessings be upon him) said: "May Allah Almighty keep you firm upon guidance and set your affairs right."
Al-Tabarani recorded it; its chain contains Asbat bin Azrah, and I do not know him. The rest of its narrators are the narrators of the Sahih.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: The Prophet (peace and blessings be upon him) used to teach us that when one of us sneezes, we should respond to his sneeze (with a prayer of mercy).
Al-Tabarani recorded it, and its chain is jayyid (good).

It is narrated from Sayyidah Aishah Siddiqah (may Allah be pleased with her) that she said: A man sneezed in the presence of the Prophet (peace and blessings be upon him) and asked: "O Messenger of Allah, what should I say?" The Prophet (peace and blessings be upon him) said: "Say: Alhamdulillah (All praise is for Allah)." The people asked: "O Messenger of Allah, what should we say to him?" The Prophet (peace and blessings be upon him) said: "Say to him: May Allah Almighty have mercy on you." That man asked: "O Messenger of Allah, then what should I say to them?" The Prophet (peace and blessings be upon him) said: "Say to them: May Allah Almighty keep you firm upon guidance and set your affairs right."
Ahmad and Abu Ya'la recorded it; its chain contains Abu Ma'shar Najih, who is weak in hadith. The rest of its narrators are thiqat (trustworthy).

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: The Prophet (peace and blessings be upon him) used to teach us that when someone sneezes, he should say: 'Alhamdulillahi Rabbil-'alamin' (All praise is for Allah, the Lord of the worlds), and the one with him should say: 'Yarhamuk Allah' (May Allah have mercy on you). When that person has said this, (the one who sneezed) should say: "May Allah Almighty forgive me and you."
Al-Tabarani recorded it in al-Mu'jam al-Kabir and al-Mu'jam al-Awsat; its chain contains Ata' bin al-Sa'ib, whose memory had become confused (ikhtilat).

It is narrated from Sayyiduna Abu Malik al-Ash'ari (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When a man sneezes, he should say: 'All praise is for Allah in every state,' and those around him should say: 'May Allah Almighty have mercy on you,' and he should say to those around him: 'May Allah Almighty keep you firm upon guidance and keep your affairs right.'"
Al-Tabarani recorded it; its chain contains Muhammad bin Isma'il bin Ayyash, who is da'if (weak).

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 one of you sneezes and says 'Alhamdulillah', the angels say: 'Rabbil-'alamin' (i.e. all praise belongs to Allah, who is the Lord of all the worlds). And when the servant also adds 'Rabbil-'alamin', the angels say: 'May Allah Almighty have mercy on you.'"
Al-Tabarani recorded it in al-Mu'jam al-Kabir and al-Mu'jam al-Awsat; its chain contains Ata' bin al-Sa'ib, whose memory had become confused (ikhtilat).

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "When one of you sneezes, he should say 'Alhamdulillah'" - the narrator says: I think the narration also contains the words "in every state" - "and it should be said to him: 'May Allah Almighty have mercy on you,' and that person should say: 'May Allah Almighty forgive us and you.'"
(Allamah al-Haythami says:) I say: Al-Tirmidhi recorded part of it.
Al-Bazzar recorded it; its chain contains Asbat bin Azrah, and I do not know him. The rest of its narrators are thiqat (trustworthy).

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When one of you sneezes, he should say 'Alhamdulillah', and the one with him should say 'Yarhamuk Allah', and that person should say: 'May Allah Almighty keep you firm upon guidance and keep your affairs right.'"
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains Yahya bin Abd al-Hamid al-Himmani, who is da'if (weak).