That is their sum of knowledge. Indeed, your Lord is most knowing of who strays from His way, and He is most knowing of who is guided.
English Transliteration
Thalika mablaghuhum mina alAAilmi inna rabbaka huwa aAAlamu biman dalla AAan sabeelihi wahuwa aAAlamu bimani ihtada
Tafsir of Verse 30
That is their attainment of knowledge. Surely thy Lord knows very well those who have gone astray from His way, and He knows very well those who are guided.
That is as far as knowledge will reach them. Verily thy Lord knoweth best those who stray from His Path, and He knoweth best those who receive guidance.