Apart from the Quran is there any other Sacred Source?

Yes, the sunnah - the practice and example of the Prophet Muhammad
(peace and blessings be upon him) is the second source of inspiration
and instruction for Muslims. Belief in the sunnah is part of the
Islamic faith. The Prophet's sunnah and sayings were documented
extensively by his contemporaries and are known as hadith. Here are a
few examples of hadith from the Prophet:
"None of you truly believe until he wishes for his brother what he
wishes forhimself."
"He who eats his fill while his neighbor goes without food is not a believer."
"God does not judge you according to your bodies and appearances, but
He looks into your hearts and observes your deeds."
"Whoever does not expresshis gratitude to people shall never grateful to God."
"Show mercy to those on earth, the One in Heaven will show mercy to you."
"God is gentle and loves gentleness."
"The world is green and beautiful and God has appointed you His
guardians over it."
"Forgive him who wrongs you; join him who cuts youoff; do good to him
who does evil to you; and speakthe truth even if it be against
yourself."
" 'A man walking along a path felt very thirsty. Reaching a well he
descended into it, drank hisfill and came up. Then he saw a dog with
its tongue hanging out, trying to lick up mud to quench its thirst.
The man saw that the dog was feeling the same thirst as he had felt,
so he went down into the well again and filled his shoe with water and
gave the dog a drink. God forgave his sins for this action.' The
Prophet was asked: 'Messenger of God, are we rewarded for kindness
towards animals?'He said, 'There is a reward for kindness to every
livingbeing.' "
"O People, listen to me in earnest, worship God Almighty, perform your
five daily prayers, fast during the month (of Ramadan), give regular
charity and perform the pilgrimage if you can afford to…
Know that every Muslim is the brother of another Muslim. You are
equal. Nobody has superiority over others, except by piety and good
actions…
I leave behind two things, if you follow these you willnever go
astray: the Book of God (the Qur'an) and myexample."

--
:-> :->