´It was narrated that 'Aishah said:` "There are two prayers that the Messenger of Allah (ﷺ) never neglected to pray them in my house secretly nor publicly: Two Rak'ahs before Fajr and two Rak'ahs after 'Asr."
Hadith ReferenceSunan an-Nasa'i / The Book of the Times (of Prayer) / Hadith: 578
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه