Abd al-Rahman bin Abdullah bin Mas'ud (may Allah have mercy on him) narrates from his father (Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him)): "Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) would (on ordinary days) complete the Noble Qur'an from one Friday to the next (once a week), and when it was the month of Ramadan he would complete the Qur'an once every three days."
The chain of this report is sahih (authentic), and Imam Ibn Abi Shaybah recorded it in al-Musannaf (3510).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب فضائل القرآن / 3510
Hadith Gradingمحدثین:إسناده ضعيف، منقطع
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :هذا إسناد ضعيف منقطع بين عبد الرحمن وأبيه. » «أخرجه سنن سعيد بن منصور برقم: 150»