As-Salaam alaikum,
"Allah has not made for any man
two hearts inside his breast chamber".
(33:4)
That is to say, there is only one heart in every man's breast chamber, either it can be occupied by Allah, Subhanahu WaTa'ala or the world and worldly relations, as Allah has no partners.
While bowing and prostration before Allah, Jallah-Jalalahu, therefore, we must concentrate on Him alone and renounce the world as love of the world and its allurements are the root cause of sins.