Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab said, "The Messenger of Allah ﷺ did not pray dhuhr and asr on the day of the Trench until after the sun had set." Malik said, "The hadith of al- Qasim ibn Muhammad from Salih ibn Khawwat is the one I like most out of what I have heard about the fear prayer."
أَنَّهُ قَالَ مَا صَلَّى رَسُولُ اللَّهِ ﷺ الظُّهْرَ وَالْعَصْرَ يَوْمَ الْخَنْدَقِ حَتَّى غَابَتِ الشَّمْسُ قَالَ مَالِكٌ وَحَدِيثُ الْقَاسِمِ بْنِ مُحَمَّدٍ عَنْ صَالِحِ بْنِ خَوَّاتٍ أَحَبُّ مَا سَمِعْتُ إِلَىَّ فِي صَلاَةِ الْخَوْفِ