Surah Al-Isra — Ayah 59 (17:59)
وَمَا مَنَعَنَآ أَن نُّرۡسِلَ بِٱلۡأٓيَٰتِ إِلَّآ أَن كَذَّبَ بِهَا ٱلۡأَوَّلُونَۚ وَءَاتَيۡنَا ثَمُودَ ٱلنَّاقَةَ مُبۡصِرَةٗ فَظَلَمُواْ بِهَاۚ وَمَا نُرۡسِلُ بِٱلۡأٓيَٰتِ إِلَّا تَخۡوِيفٗا ٥٩
English translation (Saheeh International)
And nothing has prevented Us from sending signs [i.e., miracles] except that the former peoples denied them. And We gave Thamūd the she-camel as a visible sign, but they wronged her. And We send not the signs except as a warning.
Brief commentary
And I did not stop sending tangible miracles which the idolaters requested, such as reviving the dead, except because I had sent them to previous nations but they rejected them. I had given Thamud a great, clear sign, namely the camel, but they rejected and so I hastened their punishment. And I do not send miracles at the hands of the Messengers except as a warning for their people, so that they believe.