And nothing has prevented Us from sending signs except that the former (17:59)

Almuntakhab Fi Tafsir Alquran Alkarim

In fact nothing prevented Us from sending you O Muhammad to the people with the power of working miracles to evince both your mission and Allahs Omnipotence and Rightful Authority except that people of bygone times refused to acknowledge them. Among them were the Thamudites to whom We sent the she –camel- as an evident and undoubted sign, but they mistreated her without due regard and wronged themselves. We only authorize the work of miracles so that the people be moved with a mingled feeling of dread and reverence toward Allah and realize the evil consequence of disobeying or denying Him

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(17:59) And nothing has hindered Us from sending Signs *67 except that the former people refused to acknowledge them as such. (For example,) We sent the She-camel as an open Sign to Thamud but they treated her with cruelty; *68 whereas We send Signs only by way of warning. *69

And nothing has prevented Us from sending signs except that the former meaning

*67) Here "Signs" mean those visible miracles which are presented as a proof of Prophethood. The disbelievers from among the Quraish were demanding such Signs over and over again.
*68) This is to warn the disbelievers, as if to say, "It is the mercy of Allah that He is not showing such a Sign so that you might mend your ways but in your folly you presume that such a Sign cannot be presented. You should know that a Sign is not being sent because its denial inevitably brings chastisement and the community is annihilated. You can learn from the past History that those communities which disbelieved in the open Signs were utterly destroyed, such as the people of Thamud.
*69) That is, "Miracles are not shown for fun. These are meant to warn the people that the Prophet is being helped by the Almighty and that they should realize the terrible consequences of disobedience."
 

And nothing has prevented Us from sending signs except that the former meaning in Urdu

اور ہم کو نشانیاں بھیجنے سے نہیں روکا مگر اس بات نے کہ اِن سے پہلے کے لوگ اُن کو جھٹلا چکے ہیں (چنانچہ دیکھ لو) ثمود کو ہم نے علانیہ اونٹنی لا کر دی اور اُنہوں نے اس پر ظلم کیا ہم نشانیاں اسی لیے تو بھیجتے ہیں کہ لوگ انہیں دیکھ کر ڈریں