The Sufi conception of love was introduced first by Rabia of Basra, a female mystic from the 8th century. Throughout Rumi's work the "death" and "love" appear as the dual aspects of Rumi's conception of self-knowledge. Love is understood to be "all-consuming" in the sense that it encompasses the whole personality of the lover. The influence of this tradition in Sufism was likely drawn from Persian or Hindu sources; no comparable idea is known from 9th century Christianity or Judaism. In a literary wordplay
Fakhreddin Eraqi changed the words of the shahada (la ilaha illa'llah) to la ilaha illa'l-'ishq ("there is no deity save Love"). For his part, Rumi, in his writings, developed the concept of love as a direct manifestation of the will of God, in part as a calculated response to objections coming from the orthodox wing of Islam: "Not a single lover would seek union if the beloved were not seeking it".
The concepts of unity and oneness of mankind also appear in Rumi's works. For example, the poem "Who Am I?" implies that human beings are all creatures of God regardless of what religion or land they belong to. So as to contemplate beyond physical being, God has privileged mankind by blessing him with the soul, which helps him understand the concepts of love, affection, sacrifice, etc. Hence, the human soul is placeless and traceless. It exists somewhere beyond the mundane world, so the body carrying the soul should also nurture it in a way that brings it closer to the ultimate Beloved. This may be achieved if all human beings consider themselves as members of an organic whole.