from his father: "A man sneezed in the presence of the Messenger of Allah ﷺ while I was present, so the Messenger of Allah ﷺ said: 'Yarhamukallah (May Allah have mercy upon you).' Then he sneezed a second and third time. So the Messenger of Allah ﷺ said: "This man is suffering from a cold.'"  

عَطَسَ رَجُلٌ عِنْدَ رَسُولِ اللَّهِ ﷺ وَأَنَا شَاهِدٌ فَقَالَ رَسُولُ اللَّهِ ﷺ يَرْحَمُكَ اللَّهُ ثُمَّ عَطَسَ الثَّانِيَةَ وَالثَّالِثَةَ فَقَالَ رَسُولُ اللَّهِ ﷺ هَذَا رَجُلٌ مَزْكُومٌ  

"You are suffering from a cold." [He said:] And this is more correct than the narration of Ibn Al-Mubarak.  

عَنِ النَّبِيِّ ﷺ نَحْوَهُ إِلاَّ أَنَّهُ قَالَ لَهُ فِي الثَّالِثَةِ أَنْتَ مَزْكُومٌ قَالَ هَذَا أَصَحُّ مِنْ حَدِيثِ ابْنِ الْمُبَارَكِ  

Shu'bah reported this Hadith from 'Ikrimah bin 'Ammar and it is similar to the narration of Yahya bin Sa'eed. (A chain to support that).  

عَنْ عِكْرِمَةَ بْنِ عَمَّارٍ بِهَذَا  

"You are suffering from a cold." (A chain to support that)  

وَقَالَ لَهُ فِي الثَّالِثَةِ أَنْتَ مَزْكُومٌ حَدَّثَنَا بِذَلِكَ إِسْحَاقُ بْنُ مَنْصُورٍ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ  

from his mother, from her father, who said: "The Messenger of Allah ﷺ said: 'Reply three times to the sneezing person. If he (sneezes) more, then if you wish reply and if you do not then do not.'"  

قَالَ رَسُولُ اللَّهِ ﷺ يُشَمَّتُ الْعَاطِسُ ثَلاَثًا فَإِنْ زَادَ فَإِنْ شِئْتَ فَشَمِّتْهُ وَإِنْ شِئْتَ فَلاَ