‏الصلاة : Hadeeth No:1004 Maimuna daughter of Harith reported: When the Messenger of Allaah (sallAllaahu alayhi wa sallam) prostrated, he kept his hands so much apart from each other that when it was seen from behind the armpits became visible. Waki' said: That is their whiteness....

‏الحيض : Hadeeth No:734 Anas reported: (The people) stood up for the night prayer when a man spoke forth: I need to say something. The Prophet of Allaah (sallAllaahu alayhi wa sallam) entered into secret conversation with him, till the people dozed off or some of the people (dozed off), and then they said the prayer....