Arabic hadith text
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَزِيدَ بْنِ رُومَانَ، أَنَّهُ قَالَ كَانَ النَّاسُ يَقُومُونَ فِي زَمَانِ عُمَرَ بْنِ الْخَطَّابِ فِي رَمَضَانَ بِثَلاَثٍ وَعِشْرِينَ رَكْعَةً ‏.‏
Translation

Yahya related to me from Malik that Yazid ibn Ruman said, "Thepeople used to watch the night in prayer during Ramadan for twenty-three rakas in the time of Umar ibn al-Khattab."