(1) باب فِي قَوْلِهِ تَعَالَى { أَلَمْ يَأْنِ لِلَّذِينَ آمَنُوا أَنْ تَخْشَعَ قُلُوبُهُمْ لِذِكْرِ اللَّهِ}
Ibn Mas'ud said:
Since our acceptance of Islam and the revelation of this verse in which Allah has shown annoyance to us:" Has not the time yet come for the believers that their hearts should be humble for the remembrance of Allah?" (lvii. 16), there was a gap of four years.
Reference: Sahih Muslim 3027
In-book reference: Book 56, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Book 43, Hadith 7178