Hadith 17:675
Muhammad ibn Sawa narrated to us, from Ghalib, who said: Al-Hasan and Ibn Sirin would not say "Yarhamuk Allah" (may Allah have mercy on you) to the one who sneezed until he praised Allah.
حدثنا محمد بن سواء عن غالب قال كان الحسن وبن سيرين لا يشمتان العاطس حتى يحمد الله