Duha is an optional Prayer that was performed by the Prophet (peace and blessings be upon him) between sunrise and noon. It entails great reward as the Prophet (peace and blessings be upon him) equals it to giving 360 charities. Therefore, something like this should be performed regularly and persistently.
Sheikh Sayyed Sabiq states in his well-known book, Fiqh us-Sunnah: Abu Dharr reports that the Prophet (peace and blessings be upon him) said: “Charity is required from every part of your body daily. Every saying of ‘Glory be to Allah’ is charity. Every saying of ‘Praise be to Allah’ is charity. Every saying of ‘There is no God but Allah’ is charity. Every saying of ‘Allah is the Greatest’ is charity. Ordering the good is charity. Eradicating the evil is charity. And what suffices for that (as a charity) are the two rak`ahs of Duha” (Ahmad, Muslim, and Abu Dawud).
Ahmad and Abu Dawud record from Buraydah that the Prophet (peace and blessings be upon him) said, “In a human (body) there are 360 joints and man must make a charity for each one.” The people said, “Who can do that, O Messenger of Allah?” He responded, “One may cover the mucus that one finds in the mosque or remove something harmful from the road. If one could not do that, he could pray two rak`ahs of Duha and that will be sufficient for him.”
Talking of the legal import of these hadiths, Ash-Shawkani says, “These two hadiths point to the greatness, excellence, and importance of the Duha Prayer, stressing its legality as its two rak`ahs suffice for 360 charities. Something like this should be performed regularly and persistently. The hadith also establishes the importance of saying ‘Glory be to Allah,’ ‘Praise be to Allah,’ and ‘There is no God but Allah.’ And [the importance of] ordering the good, eradicating the evil, removing the spittle, removing what is harmful from the path, and such other acts that will fulfil what is required of a person of daily charities.”
An-Nawas ibn Sam`an relates that the Prophet (peace and blessings be upon him) said, “Allah said, ‘Son of Adam, do not fail in performing four rak`ahs in the early day as it will be sufficient for the latter part of the day” (Al-Hakim and At-Tabarani).
`Abdullah ibn `Amr says: “The Messenger of Allah sent an expedition, and they obtained lots of booty and returned quickly. The people talked about their quick victory, abundant booty, and quick return. At this the Messenger of Allah said, ‘Shall I not guide you to a closer battle, a greater booty, and a quicker return? Whoever makes wudu’ and then goes to the mosque to pray Duha, that is the closer battle, better booty, and quicker return” (Ahmad and At-Tabarani).
Abu Hurayrah says: “My close friend [the Messenger of Allah] advised me to do three things: fasting three days of every month, praying the Duha Prayer, and praying the witr Prayer before I sleep” (Al-Bukhari and Muslim).