It is narrated from Sayyiduna Tamim Dari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever recites one hundred verses in (the standing of) a night, the reward of standing in prayer for the entire night will be written for him."
Hadith Referenceسلسله احاديث صحيحه / الاذان و الصلاة / 803