This is carved into the pulpit at the Wazir Khan mosque in Lahore, Pakistan (so I guess technically it is not a separate plaque...). This mosque was completed in 1635 under the supervision of Wazir Khan, the governor of Lahore at the time and physician to the emperor Shah Jahan (of Taj Mahal, Lahore Fort, Shalimar Gardens, etc. fame). This pulpit came much later as a gift from the British in 1899.
Transcription:
This pulpit was presented by His Excellency Lord Curzon of Kedleston
Viceroy and Governor General of India to the
Wazir Khan's Mosque, in memory of his first
official visit to Lahore in April 1899.
A plaque with the same message written in Urdu is also on the pulpit.