A charity is due for every joint of the body each morning — and two rakʿah of Ḍuḥā suffice for all of it. The Prophet ﷺ said: “Every tasbīḥ is charity, every taḥmīd is charity… and two rakʿah one prays in the forenoon suffice for that.” (Muslim). He advised Abū Hurayrah to pray it daily.
العربية: عن أبي ذرٍّ رضي الله عنه أنّ النبيّ ﷺ قال: «يُصبح على كل سُلامى من أحدكم صدقة… ويُجزئ من ذلك ركعتان يركعهما من الضحى». (مسلم).
After sunrise (about 15–20 min later) until before Ẓuhr, pray 2–8 rakʿah of Ḍuḥā — minutes for immense reward.