B1verb
سَخَّرَ
sakhkhara
he subjected / he made subservient
Example
أَلَمْ تَرَ أَنَّ اللَّهَ سَخَّرَ لَكُمْ مَا فِي الْأَرْضِ
alam tara anna Allāha sakhkhara lakum mā fī al-arḍ
Do you not see that Allah has subjected to you whatever is on the earth? (22:65)
Grammar
Form II verb (فَعَّلَ, causative). Noun: تَسْخِيرٌ (subjugation/making subservient). Used for God subjecting nature to serve humanity.
Culture
Taskhīr (divine subjugation of nature for humanity) implies stewardship — nature serves us by God's command, obligating us to care for it.