‏الصلاة : Hadeeth No:859 Abu Huraira reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) said: Does the man who lifts his head ahead of the Imam (from prostration) not fear that Allaah may change his head into the head of an ass?...

‏النكاح : Hadeeth No:3388 Jabir (Allaah be pleased with him) reported: We used to practise 'azl during the lifetime of Allaah's Messenger (sallAllaahu alayhi wa sallam). This (the news of this practise) reached Allaah's Prophet (sallAllaahu alayhi wa sallam), and he did not forbid us....