﴿ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا نَٰجَيْتُمُ ٱلرَّسُولَ فَقَدِّمُوا۟ بَيْنَ يَدَىْ نَجْوَىٰكُمْ صَدَقَةًۭ ۚ ذَٰلِكَ خَيْرٌۭ لَّكُمْ وَأَطْهَرُ ۚ فَإِن لَّمْ تَجِدُوا۟ فَإِنَّ ٱللَّهَ غَفُورٌۭ رَّحِيمٌ ﴾

“O YOU who have attained to faith! Whenever you [intend to] consult the Apostle, offer up something in charity on the occasion of your consultation: this will be for your own good, and more conducive to your [inner] purity. Yet if you are unable to do so, [know that,] verily, God is much-forgiving, a dispen­ser of grace.”

Please check ayah 58:13 for complete tafsir.