وَأَصْلُ الْقَدَرِ سِرُّ اللَّهِ تَعَالَى فِي خَلْقِهِ
The foundation of predestination is Allah Most High’s secret concerning His creation.
Reading the terms: Aṣl al-qadar sirr Allāh points to a depth of the divine decree not fully disclosed to created beings.
Boundary of meaning: Not encompassing the secret of decree does not nullify revealed obligations or accountability. Known commands and undisclosed wisdom are different matters.
Takeaway: Some depths of the divine decree remain beyond created knowledge.