大毘盧遮那經廣大儀軌 2.110

2.110

左赤蓮華中，觀閻字光輪，
轉成悲旋潤。慧掌火屈心。

In the red lotus on the left, visualize the light-wheel of the syllable yaṃ,
which transforms into Karuṇāmṛtaspharaṇa;
the prajñā palm bends the fire [finger] toward the heart.