‏الطهارة : Hadeeth No:433 Mus'ab b. Sa'd reported: 'Abdullah son of Umar came to Ibn'Amir in order to inquire after his health as he was ailing. He said Ibn 'Umar, why don't you prayto Allaah for me? He said: I heard of Allaah's Messenger (sallAllaahu alayhi wa sallam) say: Neither the prayer is accepted without parification...

‏الجهاد والسير‏ : Hadeeth No:4367 This hadith has been narrated on the authority of Zubair with the same chain of transmitters....