يَعْلَمُونَ مَا تَفْعَلُونَ
They know whatever you do.
তারা জানে যা তোমরা কর।
The best of you are those who learn the Quran and teach it.(Sahih al-Bukhari 5027)
The Holy Quran › 82. Al-Infitaar
Verse 12 of Surah Al-Infitaar. This Surah is Meccan and has 19 ayahs; this ayah is in Juz 30.
Sahih International · মুহিউদ্দীন খান — Sources