Sa'id bin Jubayr narrates from Sayyiduna Ibn Abbas (may Allah be pleased with them both) concerning the saying of Allah Almighty, "Indeed, the rising by night" [Surah al-Muzzammil: 6], that it means standing in prayer at night, and that nashi'ah is an Abyssinian word: when a man stands up, they say: nasha'a (he rose).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4757