Ahmed Raza Khan: Mohammed Aqib Qadri:
And if you are in any doubt concerning what We have sent down upon Our distinguished bondman (Prophet Mohammed - peace and blessings be upon him), bring forth a single surah (chapter) equal to it; and call upon all your supporters, other than Allah, if you are truthful.
Yusuf Ali:
And if ye are in doubt as to what We have revealed from time
to time to Our servant, then produce a Sura like thereunto; and call your
witnesses or helpers (If there are any) besides Allah, if your (doubts) are
true.
Pickthal:
And if ye are in doubt concerning that which We reveal unto
Our slave (Muhammad), then produce a surah of the like thereof, and call
your witness beside Allah if ye are truthful.
Courtesy of:
(PrayerWare)