Muwaththa' Malik · #988
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، كَانَ يَقُولُ اللَّهُمَّ لاَ تَجْعَلْ قَتْلِي بِيَدِ رَجُلٍ صَلَّى لَكَ سَجْدَةً وَاحِدَةً يُحَاجُّنِي بِهَا عِنْدَكَ يَوْمَ الْقِيَامَةِ .
English
Yahya related to me from Malik from Zayd ibn Aslam that Umar ibn al-Khattab used to say, "O Allah! Do not let me be slain by the hand of a man who has prayed a single prostration to You with which he will dispute with me before You on the Day of Rising