Malik related to me from Abdullah ibn Abi Bakr from his father that the Messenger of Allah ﷺ said, "If a man sneezes, invoke a blessing on him. Then if he sneezes, invoke a blessing on him. Then if he sneezes, invoke a blessing on him. Then if he sneezes, say, 'You have a cold'." Abdullah ibn Abi Bakr said, "I don't know whether it was after the third or fourth."
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَقُلْ إِنَّكَ مَضْنُوكٌ قَالَ عَبْدُ اللَّهِ بْنُ أَبِي بَكْرٍ لاَ أَدْرِي أَبَعْدَ الثَّالِثَةِ أَوِ الرَّابِعَةِ