It was narrated that Abu Yunus, the freed slave of 'Aishah the wife of the Prophet (ﷺ), said: Aishah told me to copy a Mushaf for her, and she said: 'When you reach this verse, call my attention: Guard strictly the Salawat especially the middle (Al-Wusta) Salah. [1] When I reached it, I called her attention and she dictated to me: 'Guard strictly the Salawat expecially the middle (Al-Wusta) Salah and the 'Asr prayer, and stand before Allah with obedience.' Then she said: 'I heard it from the Messenger of Allah (ﷺ).' [1] Al-Baqarah 2:238.
It was narrated from 'Ali (ﷺ) that the Prophet (ﷺ) said: They distracted us from Salatul-Wusta (the middle prayer) until the sun went down.