This couplet speaks of an individual's deep faith and the songs they sing. It also refers to their Lord and the love they hold.

This couplet beautifully captures the essence of a person's spiritual world. It speaks of their unwavering faith, the songs they sing as an expression of their devotion, their personal connection to the Divine (their Lord), and the pure love that fills their heart. It suggests that all these elements – belief, expression, spirituality, and affection – are deeply intertwined and form the very core of their being. It's a profound statement about the completeness and personal nature of one's spiritual journey and relationship with the divine.