ßÊÇÈ ÇáÈíæÚ : Hadeeth No:1939 : 'Ubai bin 'Umar:
Abu Musa asked Umar to admit him but he was not admitted as 'Umar was
busy, so Abu Musa went back. When 'Umar finished his job he said,
"Didn't I hear the voice of 'Abdullah bin Qais? Let him come in."
'Umar was told that he had left. So, he sent for him and on his
arriva...