My heart has a grief, and dust has a heart,
Yet this old branch claims His moist’s great part.
With thy skill’s magic cause a fount so,
In each Muslim lies a fountain lo!

1.         Grief; here it means love of the Prophet.
There is heart in my dust. Here Iqbal is talking in esoterics. There are five to seven secret points (called ‘Lataif’ pl of Latifah in heart.
Latifa=za subtle point in heart known to mystics only. He is hinting one of those.