In plain words
We must offer to God the fruit called the heart, which has come forth from our body
You must give to God only what has come from your body, which is the support of your life. We must offer to God the fruit called the heart, which has come from the tree called the body. We must offer the fruit called the heart, which has come forth from this body. We must offer to God the very water that has formed from the clouds called the five elements, called this body. The flower of the heart, the fruit called the mind, the water called tears of Ānanda. This is what we must offer. People give God some flowers or other. By tomorrow these flowers will wither. They bring some fruits or other and give them. By tomorrow that fruit will rot. They bring water. Worms get into that water. But the flower of the heart never spoils. Such a flower we must offer to God. To root out the Ahaṅkāra within humanness, we must offer God only pure Prema. With that very Prema we must bind the Paramātma. Develop the Prema that binds the Paramātma with the rope of Prema!