Virtue: Abu Dharr reported Allah's Apostle (ﷺ) as saying: In the morning charity is due from every bone in the body of every one of you. Every utterance of Allah's glorification is an act of charity. Every utterance of praise of Him is an act of charity, every utterance of profession of His Oneness is an act of charity, every utterance of profession of His Greatness is an act of charity, enjoining good is an act of charity, forbidding what is distreputable is an act of charity, and two rak'ahs which one prays in the forenoon will suffice. (Sahih Muslim 720)
Jubair narrated from Abu Ad-Darda, or Abu Dharr, that : 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." (at-Tirmidhi 475)
Reference: (Sahih Muslim 720; at-Tirmidhi 475)