Makhool Azdi (may Allah have mercy on him) says: I was sitting beside Sayyiduna Ibn Umar (may Allah be pleased with them both) when a man sitting in the corner of the mosque sneezed. Sayyiduna Ibn Umar (may Allah be pleased with them both) said: «يرحمك الله» if you have said «الحمد للہ».
Hadith Referenceالادب المفرد / كتاب العطاس والتثاؤب / 936
Hadith Gradingالألبانی:ضعيف الإسناد موقوف
Hadith Takhrij«ضعيف الإسناد موقوف : تفرد به المصنف»