Abdullah bin Mubarak عبد الله بن المبارك · The Book of Salah

"Abu Al-Malih narrated to me: 'We were with Buraidah on a cloudy day and he said: "Pray early, for the Messenger of Allah (ﷺ) said: 'Whoever abandons Salat Al-'Asr, his good deeds will perish.'"

"The Messenger of Allah (ﷺ) used to stand in Zuhr and recite the equivalent of thirty verses in each Rak'ah, then in the first two Rak'ahs of 'Asr he would stand for the equivalent of fifteen verses."