Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Musa (may Allah be pleased with him), the Noble Prophet (peace and blessings be upon him) said: "Whoever offers four rak‘ahs of Duha prayer and four rak‘ahs before Zuhr, a house will be built for him in Paradise."

It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Charity is due from every joint of each of you; every time you say «سبحان الله » it is charity, and every time you say «الحمد لله» it is charity, every time you say «لا الہ الا اللہ» it is charity, and every time you say « اللہ اکبر» it is charity. Enjoining good is charity and forbidding evil is charity, and all of these can be replaced by the two rak‘ahs that a person prays at the time of Duha."