﴿ إِن تَتُوبَآ إِلَى ٱللَّهِ فَقَدْ صَغَتْ قُلُوبُكُمَا ۖ وَإِن تَظَٰهَرَا عَلَيْهِ فَإِنَّ ٱللَّهَ هُوَ مَوْلَىٰهُ وَجِبْرِيلُ وَصَٰلِحُ ٱلْمُؤْمِنِينَ ۖ وَٱلْمَلَٰٓئِكَةُ بَعْدَ ذَٰلِكَ ظَهِيرٌ ﴾

“[Say, O Prophet:] "Would that you two turn unto God in repentance, for the hearts of both of you have swerved [from what is right]! And if you uphold each other against him [who is God's message-bearer, know that] God Himself is his Protector, and [that,] therefore, Gabriel, and all the righteous among the believers and all the [other] angels will come to his aid."”

Please check ayah 66:5 for complete tafsir.