The Messenger of Allah ﷺ said, "May Allah have mercy on a person who prays four units before Asr."
حدثنا أحمد بن إبراهيم حدثنا أبو داود حدثنا محمد بن مهران القرشي حدثني جدي أبو المثنى
قال رسول الله ﷺ رحم الله امرأ صلى قبل العصر أربعا
Its isnad is hasan. Tirmidhi narrated it in the Book of Prayer, chapter on what has been said about the four (rakahs) before Asr, hadith 430, from Ibn Ibrahim Dawraqi and others, with this wording, and he said, "Hasan gharib." Ibn Khuzayma graded it sahih, as did Ahmad, hadith 1193, and Ibn Hibban, hadith 616.