Sayyiduna Anas bin Malik (may Allah be pleased with him) said regarding this verse: "They used to sleep but little of the night" [Surah al-Dhariyat: 17], that they would stay awake and pray between Maghrib and Isha.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4747