‏النذر : Hadeeth No:4032 'Uqba b. Amir reported: My sister took a vow that she would walk bare foot to the house of Allaah (Ka'ba). She asked me to inquire from Allaah's Messenger (sallAllaahu alayhi wa sallam) about it. I sought his decision and he said: She should walk on foot and ride also....

‏الصلاة : Hadeeth No:1703 Ibn 'Umar reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: Observe some of your prayers in your houses and do not make them graves....