ALLAH SWT has made our body such way that it doesn't allows any foreign body.

For example-: If a dust particle enters our eyes, it starts inflammating until it does not get removed. If it enters our nose, we will be distracted unless that comes out. If there is a stone in the kidney, it puts the patient withering in unbearable pain.

Similarly ALLAH (SWT) has made our hearts for him. But we have filled it with lust of worldly life. It's a matter of grave concern. And We should try to remove it with sincere repentance.

— Shaykh Salahududdin Saifie Hafizahullah.