Sahih Bukhari Volume 5, Book 59, Hadith Number 566.

Narrated By An-Nu’man bin Bashir : Abdullah bin Rawaha fell down unconscious and his sister ‘Amra started crying and was saying loudly, “O Jabala! Oh so-and-so! Oh so-and-so! and went on calling him by his (good) qualities one by one). When he came to his senses, he said (to his sister), “When-ever you said something, I was asked, ‘Are you really so (i.e. as she says)?”