Allah, Exalted is He, Says (what means): {That is because Allah is the Truth, and that which they call upon other than Him is falsehood, and because Allah is the Most High, the Grand.} [Quran 22:62].Islam and Tawheed (i.e., Unique Oneness of Allah) are the clear truth, and Shirk (i.e., polytheism) and idolatry are sheer falsehood. The Prophet ﷺ strove to promote Islam and establish Tawheed on one hand, and demolish Shirk and idolatry on the other hand, and thus Allah, Exalted is He, perfected His light of guidance imparted to the worlds through him. In this hadeeth, ‘Abdullah ibn Mas‘ood (may Allah be pleased with him) narrated that when Allah, Exalted is He, blessed His Messenger with triumph over the disbelievers at the conquest of Makkah during the month of Ramadan in 8 A.H., he ﷺ entered it to find three hundred and sixty idols around the Ka‘bah, which people had made out of stone and taken as objects of worship. The Prophet ﷺ stabbed these idols with a stick, to demolish them, indicating the humiliation of such idols and their worshippers, and to show people that these idols did not harm or benefit, and could not even protect or defend themselves! While demolishing the idols, the Prophet ﷺ recited the ayah that reads(what means): {And say, "Truth has come, and falsehood has departed. Indeed, is falsehood, [by nature], ever bound to depart."} [Quran 17:81]. The ayah means, ‘O Messenger of Allah, say, ‘Truth has come, and falsehood has departed. Indeed, falsehood is innately ever bound to depart,’ to express gratitude to your Lord, acknowledging His grace, and celebrate His victory. It means, ‘Truth, with which Allah, Exalted is He, sent me has triumphed over all the opposing (false) beliefs: Shirk, Kufr (i.e., disbelief), and falsehood.’ They faded away and their power vanished, for falsehood is inherently unstable and precarious at all times. It is deduced from the hadeeth that it is permissible to recite this ayah when eliminating an evil..