It is narrated from Abu Burdah bin Abu Musa (may Allah have mercy on him) that I went to my father, Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him), while he was with (his wife) the daughter of Fadl bin Abbas (Umm Kulthum). I sneezed, but he did not respond to me, and she (Umm Kulthum) sneezed, and he responded to her. I told my mother (Umm Abdullah). When my respected father came to her, she spoke at length and said: My son sneezed, but you did not respond to him, and you responded to her (your wife Umm Kulthum). He said to my mother: Indeed, I heard the Prophet (peace and blessings of Allah be upon him) say: "When one of you sneezes and says «الحمد للہ» , then respond to him, and if he does not say «الحمد للہ» , then do not respond to him." My son sneezed and did not say «الحمد للہ» , so I did not respond to him, and she (Umm Kulthum) sneezed and she said «الحمد للہ» , so I responded to her. She said: You did very well.