It is narrated from Sayyiduna Tamim al-Dari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever recites one hundred verses in a night, a night's devotion (qunut, worship) will be recorded for him."
Hadith Referenceالمعجم الكبير للطبراني / باب التاء / 1241