قُلۡ كَفَىٰ بِٱللَّهِ بَيۡنِي وَبَيۡنَكُمۡ شَهِيدٗاۖ يَعۡلَمُ مَا فِي ٱلسَّمَٰوَٰتِ وَٱلۡأَرۡضِۗ وَٱلَّذِينَ ءَامَنُواْ بِٱلۡبَٰطِلِ وَكَفَرُواْ بِٱللَّهِ أُوْلَٰٓئِكَ هُمُ ٱلۡخَٰسِرُونَ ٥٢
Say, "Sufficient is Allāh between me and you as Witness. He knows what is in the heavens and earth. And they who have believed in falsehood and disbelieved in Allāh - it is those who are the losers."
Translation: Saheeh International (English)
Each word's meaning and sound
O Messenger! Say: “Allah, may He be glorified, is enough as a witness to my truthfulness in what I convey, and to your rejection of it. He knows everything that is in the heavens and everything that is on Earth; nothing is hidden from Him. As for those who bring faith upon falsehood in worshipping anything instead of Allah, whilst rejecting the being who alone is worthy of worship, they are the true losers because of them choosing disbelief over belief.
Al-Mukhtasar in interpreting the Noble Quran