大毘盧遮那成佛經疏 2.61

2.61

The thirty-second, the "singing mind," lacks text in the Sanskrit manuscript and is not explained [in the root text]. The ācārya said: "This is an analogy for transmitting the sound of the Dharma. It is like an ordinary person learning a tune from someone else; once skilled, they play it for others, producing various sweet and melodious sounds that delight those who hear it. This mind desires to hear the true Dharma from others, thinking: 'I shall in turn expound it for sentient beings, adorning and distinguishing it with various phrases, so that this wondrous sound is heard everywhere.'" This mostly stems from past habituation as a śrāvaka and can also obstruct the pure mind. Reflecting: "I shall attain the innate wisdom of inner realization, and only then universally manifest rūpakāyas to expound it," serves as its antidote.