Sahih al-Bukhari 1445
Narrated Abu Burda:
from his father from his grandfather that the Prophet (ﷺ) said, "Every Muslim has to give in charity." The 
people asked, "O Allah's Prophet! If someone has nothing to give, what will he do?" He said, "He 
should work with his hands and benefit himself and also give in charity (from what he earns)." The 
people further asked, "If he cannot find even that?" He replied, "He should help the needy who appeal 
for help." Then the people asked, "If he cannot do that?" He replied, "Then he should perform good 
deeds and keep away from evil deeds and this will be regarded as charitable deeds."
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا سَعِيدُ بْنُ أَبِي بُرْدَةَ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ عَلَى كُلِّ مُسْلِمٍ صَدَقَةٌ ‏"‏‏.‏ فَقَالُوا يَا نَبِيَّ اللَّهِ فَمَنْ لَمْ يَجِدْ قَالَ ‏"‏ يَعْمَلُ بِيَدِهِ فَيَنْفَعُ نَفْسَهُ وَيَتَصَدَّقُ ‏"‏‏.‏ قَالُوا فَإِنْ لَمْ يَجِدْ قَالَ ‏"‏ يُعِينُ ذَا الْحَاجَةِ الْمَلْهُوفَ ‏"‏‏.‏ قَالُوا فَإِنْ لَمْ يَجِدْ‏.‏ قَالَ ‏"‏ فَلْيَعْمَلْ بِالْمَعْرُوفِ، وَلْيُمْسِكْ عَنِ الشَّرِّ فَإِنَّهَا لَهُ صَدَقَةٌ ‏"‏‏.‏