Narrator:Abdullāh ibn ‘Umar
حَدَّثَنَا عَلِيُّ بْنُ حَفْصٍ، وَبِشْرُ بْنُ مُحَمَّدٍ، قَالاَ أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم لاِبْنِ صَيَّادٍ "
خَبَأْتُ لَكَ خَبِيئًا ". قَالَ الدُّخُّ. قَالَ " اخْسَأْ فَلَنْ تَعْدُوَ قَدْرَكَ ". قَالَ عُمَرُ ائْذَنْ لِي فَأَضْرِبَ عُنُقَهُ. قَالَ " دَعْهُ، إِنْ يَكُنْ هُوَ فَلاَ تُطِيقُهُ، وَإِنْ لَمْ يَكُنْ هُوَ فَلاَ خَيْرَ لَكَ فِي قَتْلِهِ "
Narrated Ibn `Umar:
The Prophet (ﷺ) said to Ibn Saiyad, "I have kept for you a secret." Ibn Saiyad said, "Ad-Dukh." The Prophet said, "Keep quiet, for you cannot go beyond your limits (or you cannot exceed what has been foreordained for you)." On that, `Umar said (to the Prophet (ﷺ) ), "Allow me to chop off his neck!" The Prophet said, "Leave him, for if he is he (i.e., Ad-Dajjal), then you will not be able to overcome him, and if he is not, then you gain no good by killing him."
Reported by Al-Bukhari (No. 6618, 1354, 2638, 3033, 3055, 3056, 3337, 6173-6175), Muslim (No. 2930a), Abu Dawud (No. 4329, 4757), At-Tirmidhi (No. 2235, 2249) and Ahmad (No. 6075, 6076, 6077).