Surah Al-Qamar, Verse 27

إِنَّا مُرۡسِلُواْ ٱلنَّاقَةِ فِتۡنَةٗ لَّهُمۡ فَٱرۡتَقِبۡهُمۡ وَٱصۡطَبِرۡ٢٧

innā mur'silū l-nāqati fit'natan lahum fa-ir'taqib'hum wa-iṣ'ṭabir

Indeed, We are sending the she-camel as trial for them, so watch them and be patient.