﴿ أَعَدَّ ٱللَّهُ لَهُمْ عَذَابًۭا شَدِيدًۭا ۖ فَٱتَّقُوا۟ ٱللَّهَ يَٰٓأُو۟لِى ٱلْأَلْبَٰبِ ٱلَّذِينَ ءَامَنُوا۟ ۚ قَدْ أَنزَلَ ٱللَّهُ إِلَيْكُمْ ذِكْرًۭا ﴾

“[the while] God has readied for them [yet more] suffering severe [in the life to come] Hence, remain conscious of God, O you who are endowed with insight - [you] who have attained to faith! God has indeed bestowed on you a reminder from on high:”

‘So, fear God, O men of understanding.’ This statement indicates that the fountainhead of piety (taqwa) is the mind. Only by using his wisdom and consciousness does a man achieve that status which is called (taqwa) in the Islamic law.