In his recorded words, he quoted directly from or referred indirectly to over half of the books of the Hebrew Scriptures.
مَثَلًا ،‏ كَثِيرًا مَا كَانَ يَقُولُ قَبْلَ ذِكْرِ نُقْطَةٍ مُهِمَّةٍ :‏ « مَكْتُوبٌ » .‏