يا أَيُّهَا الَّذينَ آمَنوا إِذا ناجَيتُمُ الرَّسولَ فَقَدِّموا بَينَ يَدَي نَجواكُم صَدَقَةً ۚ ذٰلِكَ خَيرٌ لَكُم وَأَطهَرُ ۚ فَإِن لَم تَجِدوا فَإِنَّ اللَّهَ غَفورٌ رَحيمٌ

O you who believe, when you wish to have a private conversation with the Messenger, precede your private consultation with a charity. This is better and purer for you. However, if you lack the means, God is Forgiving and Merciful.