Rumaythah (Radhiallahu Anha) said:
"I heard this subject from Rasullullah (Sallallahu alaihi wasallam) and at that time I was so near him, that if I wanted to, I could have kissed the Seal of Prophethood. That subject is: `Rasullullah (Sallallahu alaihi wasallam) was talking about Sa's bin Mu'aadh (Radhiallahu anhu), that because of Sa'd's death, the `Arsh (Throne) of Allah shook'". (FR)
English reference (FR): Book 2, Hadith 17 (FR)
Arabic reference (FR): Book 2, Hadith 18 (FR)