Allah's Messenger narrated that Allah, Blessed and Most High said: "Son of Adam: Perform four Rak'ah for Me in the beginning of the day it will suffice you for the latter part of it."
Jami` at-Tirmidhi Book 3, Hadith 23
← Previous Hadith "No one informed that they saw Allah's Messenger praying Ad-Duha except Umm Hani. She narrated that Allah's Messenger entered her house on the Day of the Conquest of Makkah. He performed Ghusl and performed eight voluntary Rak'ah such that she had not ever seen him pray any Salat lighter than them, but that he completed the bowing and prostrations."

Jami` at-Tirmidhi Book 3, Hadith 22 Next Hadith → Allah's Messenger said: "Whoever continuously performs the two Rak'ah of Ad-Duha his sins will be forgiven, even if they be like the foam of the sea."

Jami` at-Tirmidhi Book 3, Hadith 24