गुकारंचगुणातीतं ।रुकारंरूपवर्जितं ॥गुणातीतमरूपंच ।योदद्यात्सगुरुःस्मृतः ॥
In plain words
The sound gu is what is beyond the guṇas; the sound ru is what is void of form. He who bestows what is beyond the guṇas and what is without form is remembered as the guru.