Authentic
graded by Salim al-Hilali
Muwatta Malik 1769
حَدَّثَنِي مَالِكٌ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ
" إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَشَمِّتْهُ ثُمَّ إِنْ عَطَسَ فَقُلْ إِنَّكَ مَضْنُوكٌ "
Malik related to me from Abdullah ibn Abi Bakr from his father that the Messenger of Allah, may Allah bless him and grant him peace, 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."
Reported by Malik (No. 1769).