Name: Abdullah bin Umar bin Khattab
Mother's name: Zaynab bint Mazoon – sister of Hazrat Uthman bin Mazoon (R)
He accepted Islam with his father in Makkah whilst he was still relatively young and he made Hijrah with his father as well. He was approximately 10 years old at the time. He sought permission to participate in Badr but was declined by Rasulullah (Sallallahu Alaihi Wasallam) on account of his tender age. The same happened at the time of Uhud. The first battle he participated in was the Battle of Trench. Thereafter he participated in all the battles and was also present at Hudaybiyyah. He was most particular in following the Sunnah to such an extent that even when travelling he tried his best to take the route which Rasulullah (Sallallahu Alaihi Wasallam) had travelled on, to stop over wherever he (Sallallahu Alaihi Wasallam) had stopped, to offer Salah where he (Sallallahu Alaihi Wasallam) had performed Salah and even select a tree for shade which Rasulullah (Sallallahu Alaihi Wasallam) had rested under. He lived a simple life and spent abundantly in charity. He passed away in 73 or 74 A.H. at the approximate age of 83.
Hazrat Abdullah bin Umar (R) narrates about himself that he dreamed one night that 2 angels had taken him towards Jahannam. He was afraid and said, “I seek refuge in Allah from the fire.” A third angel then came to him and said to him, “You are a good man. If only you performed excessive Salah …” He then narrated this this dream to his sister Hazrat Hafsah t who was among the blessed wives of Rasulullah (Sallallahu Alaihi Wasallam) and asked her to relate it to Rasulullah (Sallallahu Alaihi Wasallam). Rasulullah (Sallallahu Alaihi Wasallam) replied, “Abdullah is a pious man. If only he performed Tahajjud Salah.” (Bukhari) Nafi, his freed slave and Saalim, his son, say he slept very little thereafter and he performed excessive Salah.
He narrates another dream which he saw, he was in Jannah holding a piece of silken cloth which carried him to whichever part of Jannah he pointed towards. He then narrated it to Hazrat Hafsah t and she narrated it to Rasulullah (Sallallahu Alaihi Wasallam) who said, “Verily your brother is a pious man.” Another version sates that he (Sallallahu Alaihi Wasallam) said, “Verily Abdullah is a pious man.” (Tirmizi)