"Indeed, We shall cast upon you a heavy Word." Qatada's interpretation: He means its obligations, its limits, and acting upon it.
﴿إِنَّا سَنُلْقِي عَلَيْكَ قَوْلا ثَقِيلا﴾ تَفْسِيرُ قَتَادَةَ: يَعْنِي: فَرَائِضَهُ وَحُدُودَهُ وَالْعَمَل بِهِ
