Hadith 505140
Chapter 15: The Qur'an - كتاب القرآن
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، قَالَ اللَّهُمَّ اجْعَلْنِي مِنْ أَئِمَّةِ الْمُتَّقِينَ .
Yahya related to me from Malik that he had heard that Abdullah ibn Umar said, "O Allah, make me one of the leaders of the people of taqwa ." Allahumma jalniy min a'imati'l-mutaqin.
Reference Muwatta Malik 505140
USC-MSA web (English) reference : Book 15, Hadith 42