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 Abdullahibn Umar said, "O Allah, make me one of the leaders of the people oftaqwa ." Allahumma jalniy min a'imati'l-mutaqin. Translation Not Available

Book Ref: Muwatta Imam Malik Book 15 Hadith 514
Web Ref:  Muwatta Imam Malik Book 15 Hadith 42