Muhammad says that there was a woman named Muwiyah whose children would not survive. Once I came to Ubaydullah bin Mu'mar, where a companion was sitting. He said that a woman came with one of her children and said, "O Messenger of Allah, pray to Allah for blessing for this child, because before this, three of my children have passed away." The Prophet (peace be upon him) asked her, "Since accepting Islam, until now?" She said, "Yes." The Prophet (peace be upon him) said, "(This is for you) a very strong shield." Muwiyah says that Ubaydullah bin Mu'mar said to me, "Listen," then he left from there and came to us and narrated this hadith to us.