﴿ بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ إِذَا جَآءَكَ ٱلْمُنَٰفِقُونَ قَالُوا۟ نَشْهَدُ إِنَّكَ لَرَسُولُ ٱللَّهِ ۗ وَٱللَّهُ يَعْلَمُ إِنَّكَ لَرَسُولُهُۥ وَٱللَّهُ يَشْهَدُ إِنَّ ٱلْمُنَٰفِقِينَ لَكَٰذِبُونَ ﴾

“WHEN THE HYPOCRITES come unto thee, they say, "We bear witness that thou art indeed God's Apostle!" But God knows that thou art truly His Apostle; and He bears witness that the hypocrites are indeed false [in their declaration of faith].”

Please check ayah 63:4 for complete tafsir.