Al-'Ankabut 29:14

Walaqad arsalna noohan ilaqawmihi falabitha feehim alfa sanatin illa khamseena AAamanfaakhathahumu attoofanu wahum thalimoon

And We certainly sent Noah to his people, and he remained among them a thousand years minus fifty years, and the flood seized them while they were wrongdoers.

We sent NūH to his people. So he stayed with them one thousand, less fifty, years. Then the Deluge seized them, and they were transgressors.