The following book discusses the different aspects of Righteousness which have been mentioned in chapter 2 Al Baqarah, Verse 177 of the Holy Quran:
"Righteousness is not that you turn your faces toward the east or the west, but [true] righteousness is [in] one who believes in Allah, the Last Day, the angels, the Book, and the prophets and gives wealth, in spite of love for it, to relatives, orphans, the needy, the traveler, those who ask [for help], and for freeing slaves; [and who] establishes prayer and gives zakāh; [those who] fulfill their promise when they promise; and [those who] are patient in poverty and hardship and during battle. Those are the ones who have been true, and it is those who are the righteous."
Righteousness is a key aspect of Good Character. According to the Hadith found in Jami At Tirmidhi, number 2003, the Holy Prophet Muhammad, peace and blessings be upon him, has advised that the heaviest thing in the Scales of Judgment Day will be Noble Character. It is one of qualities of the Holy Prophet Muhammad, peace and blessings be upon him, which Allah, the Exalted, complimented in Chapter 68 Al Qalam, Verse 4 of the Holy Quran:
"And indeed, you are of a great moral character."
Therefore, it is a duty on all Muslims to gain and act on the teachings of the Holy Quran and the traditions of the Holy Prophet Muhammad, peace and blessings be upon him, in order to Achieve Noble Character.