The general theme of Rumi's thought, like that of other mystic and Sufi poets of Persian literature, is essentially that of the concept of tawhid — union with his beloved (the primal root) from which/whom he has been cut off and become aloof — and his longing and desire to restore it.
The Masnavi weaves fables, scenes from everyday life, Qur'anic revelations and exegesis, and metaphysics into a vast and intricate tapestry. In the East, it is said of him that he was "not a prophet — but surely, he has brought a scripture."
Rumi believed passionately in the use of music, poetry and dance as a path for reaching God. For Rumi, music helped devotees to focus their whole being on the divine and to do this so intensely that the soul was both destroyed and resurrected. It was from these ideas that the practice of whirling Dervishes developed into a ritual form. His teachings became the base for the order of the Mevlevi, which his son Sultan Walad organised. Rumi encouraged Sama, listening to music and turning or doing the sacred dance. In the Mevlevi tradition, samāʿ represents a mystical journey of spiritual ascent through mind and love to the Perfect One. In this journey, the seeker symbolically turns towards the truth, grows through love, abandons the ego, finds the truth and arrives at the Perfect. The seeker then returns from this spiritual journey, with greater maturity, to love and to be of service to the whole of creation without discrimination with regard to beliefs, races, classes and nations.
In other verses in the Masnavi, Rumi describes in detail the universal message of love:
The lover’s cause is separate from all other causes Love is the astrolabe of God's mysteries.
Rumi's favourite musical instrument was the ney (reed flute).