فَعَقَرُوهَا فَقَالَ تَمَتَّعُوا۟ فِى دَارِكُمْ ثَلَٰثَةَ أَيَّامٍ ۖ ذَٰلِكَ وَعْدٌ غَيْرُ مَكْذُوبٍ
7:78; 26:158; 54:30; 91:15.
Important Words:
فعقروھا (But they hamstrung her). See 7:78.
تـمتـعـوا (Enjoy yourselves) may also mean, benefit by the provision Allah has made for men in this world. See also 2:37 & 4:25.
مكذوب (a lie) is derived from كذب meaning, inter alia, he lied or he uttered a falsehood; he said what was untrue, whether intentionally or unintentionally; he found his hopes false or vain. مکذوب is synonymous with کذب (kazibun) and means a lie or a falsehood; an untruth, etc. مکذوب also means, one to whom a lie or falsehood or untruth is told. قول مکذوب (originally مکذوب فیه) means, a false saying; a lie (Lane).
Commentary:
All the precautions which Salih took proved futile. His persecutors assaulted and killed his she-camel and thus challenged and insulted the proclamation of God, consequently bringing on themselves the threatened punishment.
The respite of three days was probably meant as a last chance for repentance of which the unlucky people, however, did not avail themselves.