It is narrated from Sayyiduna Hudhayfah (may Allah be pleased with him) that he said: "I heard the Messenger of Allah (peace and blessings be upon him) say on the day of the Battle of the Trench: 'They kept us busy and away from the Asr prayer (that is, did not let us pray it)' (and on that day he (peace and blessings be upon him) did not pray it until the sun had set), 'may Allah fill their graves with fire, their hearts with fire, and their houses with fire.'"
Hadith Referenceالمعجم الأوسط / باب الألف / 1118
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 2891، والبزار فى «مسنده» برقم: 2906، والطحاوي فى «شرح معاني الآثار» برقم: 1888»