The Messenger of God (Sallallaahu `alayhi wa sallam) said:
“To acquire some useful knowledge is of greater merit than to perform a hundred devotional prayers voluntarily.”

Ali Bin Abu Talib (Radiyallaahu `anhu) narrated that according to Allah’s Messenger (Sallallaahu `alayhi wa sallam) said:
“… If anyone introduces an innovation in the religion, he will be responsible for it. (Good or bad). If anyone introduces an innovation or gives shelter to a man who introduces an innovation (in the religion) he is cursed by Allah, by His angels and by all the people.”

The Prophet (Sallallaahu `alayhi wa sallam) said:
“The most truthful of speech is the Book of Allah and the best of guidance is the guidance of Muhammad, and the most evil of things are those which are newly-invented.”

It was narrated from Aws ibn Aws (Radiyallaahu `anhu) that the Prophet (Sallallaahu `alayhi wa sallam) said:
“The best of your days is Friday. On that day Adam (peace be upon him) was created; on that day he died; on that day the Trumpet will be blown and on that day all of creation will swoon.
So send a great deal of blessings upon me, for your blessings will be shown to me.”
They said, “O Messenger of Allah, how will our blessings upon you be shown to you when …

Nu’man b. Bashir reported that the Last Messenger of Allah (Sallallaahu `alayhi wa sallam) said:
“The similitude of believers in regard to mutual love, affection, fellow-feeling is that of one body; when any limb of it aches, the whole body aches, because of sleeplessness and fever.”

The Messenger of God (Sallallaahu `alayhi wa sallam) said:
“The example of the one who remembers his Lord (God) in comparison with the one who does not remember his Lord is that of the living and the dead.”

Anas ibn Malik (Radiyallaahu `anhu) narrated that the Messenger of Allah (Sallallaahu `alayhi wa sallam) said,
“The Paradise is surrounded by hardships and the Hell-Fire is surrounded by temptations.’”

Jabir (Radiyallaahu `anhu) reported, The Prophet of Allah (Sallallaahu `alayhi wa sallam) said,
“The best remembrance of God is ‘La ilaha illallahu.’”