SB 7.9.51
sri-narada uvaca
etavad varnita-guno
bhaktya bhaktena nirgunah
prahradam pranatam prito
yata-manyur abhasata
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The great saint Narada said: Thus Lord Nrsimhadeva was pacified by the devotee Prahlada Maharaja with prayers offered from the transcendental platform. The Lord gave up His anger, and being very kind to Prahlada, who was offering prostrated obeisances, He spoke as follows.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The word nirguna is important. The Mayavadi philosophers accept the Absolute Truth as nirguna or nirakara. The word nirguna refers to one who possesses no material qualities. The Lord, being full of spiritual qualities, gave up all His anger and spoke to Prahlada.