Surah Al-A'raf (The Heights), Verse 73

وَاِلٰی ثَمُوْدَ اَخَاهُمْ صٰلِحًا قَالَ یٰقَوْمِ اعْبُدُوا اللّٰهَ مَا لَكُمْ مِّنْ اِلٰهٍ غَیْرُهٗ قَدْ جَآءَتْكُمْ بَیِّنَةٌ مِّنْ رَّبِّكُمْ هٰذِهٖ نَاقَةُ اللّٰهِ لَكُمْ اٰیَةً فَذَرُوْهَا تَاْكُلْ فِیْۤ اَرْضِ اللّٰهِ وَلَا تَمَسُّوْهَا بِسُوْٓءٍ فَیَاْخُذَكُمْ عَذَابٌ اَلِیْمٌ ۟

Wa ilaa Samooda akhaahum Saalihaa; qaala yaa qawmi' budul laaha maa lakum min ilaahin ghairuhoo qad jaaa'atkum baiyinatum mir Rabbikum haazihee naaqatul laahi lakum Aayatan fazaroohaa ta'kul feee ardil laahi wa laa tamassoohaa bisooo'in fa ya'khuzakum 'azaabun aleem

“To the Thamud people (We sent) Salih, one of their own brethren: He said: "O my people! worship Allah: ye have no other god but Him. Now hath come unto you a clear (Sign) from your Lord! This she-camel of Allah is a Sign unto you: So leave her to graze in Allah's earth, and let her come to no harm, or ye shall be seized with a grievous punishment.”

Quran 7:73 (Yusuf Ali Translation)