It is narrated from Hazrat Ibn Masood (may Allah be pleased with him) and Hazrat Abu Hurairah (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said in the explanation of the Quranic verse "Indeed, the recitation of the Qur'an at dawn is ever witnessed" that at that time, the angels of the night and the angels of the day gather together.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10133
Hadith Gradingحکم دارالسلام:صحيح، خ: 648، م: 649، وله هنا إسنادان، الأول: منقطع فإن إبراهيم لم يسمع من ابن مسعود، والثاني: صحيح