Faqih [Abu Layth Samarqandi] (Rahimullah) says, the fear of Allah is shown through five things:
Tongue – Because of the fear of Allah it stops from lies, evil-speaking, backbiting and unnecessary talking and engages in Tilawat and Zikr.
Stomach – A person puts only Halal food in his stomach and saves it from Haram, and even Halal enters just as much as necessary.
Eye – It dislikes Haram and looks at Halal as well only for admonition, not because of desires.
Hand – It stops from all these actions that Allah dislikes, it’s actions are only for the sake of Allah’s pleasure.
Foot – It doesn’t take a step towards the things including Allah’s disobedience, but runs for the pleasure of Allah.
Heart – In the Allah-fearing heart in the place of hatred, envy and jealousy is love, friendliness, humanity and respect.
Ikhlas – Someone fearing Allah keeps on exploring Ikhlas to avoid that Ikhlas missing somewhere causes all the actions to get wasted.
For people like this the Qur’an says,
“The Hereafter, in the sight of thy Lord is for the Righteous [Muttaqeen].” (43:35)
“Verily for the God-conscious [Muttaqeen] there is supreme fulfilment in store.” (78:31)
“As to the Righteous [Muttaqeen] (they will be) in a position of Security.” (44:51)
“Not one of you but will pass over it: this is, with thy Lord, a Decree which must be accomplished. But We shall save those who guarded against evil, and We shall leave the wrong-doers therein, (humbled) to their knees.” (19:71-72)
[“Tanbihul Ghafileen” by Faqih Abu Layth Samarqandi (Rahimullah Ta’ala)]