Does this instruction require that you literally utter in a low voice all the words you read from Genesis to Revelation?
فَقَدْ أَوْصَى يَشُوعَ قَدِيمًا :‏ « لَا يَبْرَحْ سِفْرُ ٱلشَّرِيعَةِ هٰذَا مِنْ فَمِكَ ،‏ وَٱقْرَأْ فِيهِ هَمْسًا نَهَارًا وَلَيْلًا » .‏