Hadith 9:74
Narrated Jabir:
`Umar came cursing the disbelievers (of Quraish) on the day of Al-Khandaq (the battle of Trench) and said, "I could not offer the `Asr prayer till the sun had set. Then we went to Buthan and he offered the (`Asr) prayer after sunset and then he offered the Maghrib prayer.
حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ هِشَامٍ، قَالَ حَدَّثَنَا يَحْيَى ـ هُوَ ابْنُ أَبِي كَثِيرٍ ـ عَنْ أَبِي سَلَمَةَ، عَنْ جَابِرٍ، قَالَ جَعَلَ عُمَرُ يَوْمَ الْخَنْدَقِ يَسُبُّ كُفَّارَهُمْ وَقَالَ مَا كِدْتُ أُصَلِّي الْعَصْرَ حَتَّى غَرَبَتْ. قَالَ فَنَزَلْنَا بُطْحَانَ، فَصَلَّى بَعْدَ مَا غَرَبَتِ الشَّمْسُ، ثُمَّ صَلَّى الْمَغْرِبَ
Original Reference: Sahih al-Bukhari 598