(36) باب الدَّلِيلِ لِمَنْ قَالَ الصَّلاَةُ الْوُسْطَى هِيَ صَلاَةُ الْعَصْرِ
'Abdullah (b. Mas'ud) reported that the polytheists detained the Messenger of Allah (ﷺ) from observing the afternoon prayer till the sun became red or it became yellow. Upon this the Messenger of Allah (ﷺ) said:
They have diverted us from (offering) the middle prayer. i. e. the 'Asr prayer. May Allah fill their bellies and their graves with fire, or he said: May Allah stuff their bellies and their graves with fire.
Reference: Sahih Muslim 628
In-book reference: Book 5, Hadith 262
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1315