The Heart is Allah's House

Arif Billah Hazrat Maulana Shah Hakeem Muhammad Akhtar sahab(Damat Barakathum) in his book'Connection With Allah Ta'la' says:
Maulana Rumi (Rahmatullah Alaihy)
had mentioned that a person will never achieve a close link with Allah until his heart is totally detachedfrom this perishable and material world. There is only ONE heart: You either give itto Allah Ta’ala or you give it to the temporary world.Once in a gathering, in which Hazratwala (Damat Barakathum) was also present, 
Hazrat Mufti Muhammad Shafi Saheb (Rahmatullah Alaihy)
said: "It is permissible to keep 
Dunya 
(material world) in one's hand,and even in one's pocket, but not in one's heart. The heart is Allah's house." 
Hazrat Khawajah Saheb (Rahmatullah Alaihy)
used to say

O Majzub! Remove the thoughts of beauties from your heart,The House of Allah is not the place for keeping idols (temporary beauties).

If the love-of worldly things enter the heart, then this heart of dust has been ruined and wasted on dust (since all material things originate from dust and end up asdust). If on the other hand, the love of Allah enters this heart of dust, then it will become valuable. 

Source Connection With Allah Ta'la