Lemma ارْتَقِبْ has 3 unique word forms and appears 4 times in the Quran.

Word Translation Occurrences
فَٱرۡتَقِبۡ So watch, Then watch 4
فَٱرۡتَقِبۡهُمۡ so watch them 2
وَٱرۡتَقِبُوٓاْ And watch 2