عَنْ أَبِي ذَرٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((يُصْبِحُ عَلَى كُلِّ سُلَامَى مِنْ أَحَدِكُمْ صَدَقَةٌ، وَكُلُّ تَسْبِيحَةٍ صَدَقَةٌ وَتَهْلِيلَةٍ صَدَقَةٌ وَتَكْبِيرَةٍ صَدَقَةٌ وَتَحْمِيدَةٍ صَدَقَةٌ وَأَمْرٌ بِمَعْرُوفٍ صَدَقَةٌ، وَنَهْيٌ عَنِ الْمُنْكَرِ صَدَقَةٌ، وَيُجْزِي أَحَدَكُمْ مِنْ ذَلِكَ كُلِّهِ رَكْعَتَانِ يَرْكَعُهُمَا مِنَ الضُّحَى))
It is narrated from Sayyiduna Abu Dharr Ghifari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: When any of you wakes up in the morning, there is a charity due on every joint of his body. Saying SubhanAllah is charity, saying La ilaha illallah is charity, saying Allahu Akbar is charity, enjoining good is charity, and forbidding evil is charity. (In this way, by performing these acts, the charity due on these limbs can be fulfilled.) And two rak‘ahs performed at the time of Duha suffice for all these.