‏الصيام : Hadeeth No:2592 Abdullah b. Amr (Allaah be pleased with both of them) reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) said to me: 'Abdullah b. Amr, you fast continuously and stand in prayer for the whole of night. If you do like that, your eyes would be highly strained and would sink and lose sight...

‏الحج : Hadeeth No:3216 Ibn Umar narrated from Allaah's Prophet (sallAllaahu alayhi wa sallam) a hadlth like this....