Hadith 3478
Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: Whoever recites fifty verses in a night will not be written among the heedless.
Hadith 3479
Sayyiduna Tamim Dari and Sayyiduna Fadala bin Ubaid (may Allah be pleased with them both) said: Whoever recites fifty verses in one night will be recorded among the memorizers.