Is Hanuman Ashtak part of Ramacharitmanas?

[Avinash 0]

"Ko nahi janat hai jag mein kapi sankat-mochan naam tiharo"

This line is present in Hanuman Ashtak. I did not find this line anywhere inside Hanuman Chalisa. So, from where is Hanuman Ashtak taken? Is Hanuman Ashtak a part of Ramacharitmanas(Sundar Kand may be?). Or, is it independent?

[govindrajaa 0]

 

"Ko nahi janat hai jag mein kapi sankat-mochan naam tiharo"

This line is present in Hanuman Ashtak. I did not find this line anywhere inside Hanuman Chalisa. So, from where is Hanuman Ashtak taken? Is Hanuman Ashtak a part of Ramacharitmanas(Sundar Kand may be?). Or, is it independent?

 

it is believed that Hanuman is still alive on some parts somewhere in himalayas

[Avinash 0]

Thank you. But I wanted to know from where Hanuman Ashtak is taken.