‏الطهارة : Hadeeth No:512 Abu Qatada reported it from his father that the Messenger of Allaah (sallAllaahu alayhi wa sallam) said: When anyone amongst you enters the privy he should not touch his penis with his right hand....

‏الحج : Hadeeth No:3010 Salim reported that Abu Bakr, 'Umar and Ibn Umar used to halt at Abtah. 'Urwa narrated from 'A'isha (Allaah be pleased with her) that he did not observe this practice and said: Allaah's Messenger (sallAllaahu alayhi wa sallam) halted there, for it is a place from where it was easy to depart....