SB 7.13.46
sri-narada uvaca
dharmam paramahamsyam vai
muneh srutvasuresvarah
pujayitva tatah prita
amantrya prayayau grham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Narada Muni continued: After Prahlada Maharaja, the King of the demons, heard these instructions from the saint, he understood the occupational duties of a perfect person [paramahamsa]. Thus he duly worshiped the saint, took his permission and then left for his own home.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
As quoted in Caitanya-caritamrta (Madhya 8.128), Sri Caitanya Mahaprabhu said:
kiba vipra, kiba nyasi, sudra kene naya
yei krsna-tattva-vetta sei ‘guru’ haya
A guru, or spiritual master, can be anyone who is well conversant with the science of Krsna. Therefore although Prahlada Maharaja was a grhastha ruling over the demons, he was a paramahamsa, the best of human beings, and thus he is our guru. In the list of gurus, or authorities, Prahlada Maharaja’s name is therefore mentioned:
svayambhur naradah sambhuh
kumarah kapilo manuh
prahlado janako bhismo
balir vaiyasakir vayam
(Bhag. 6.3.20)
The conclusion is that a paramahamsa is an exalted devotee (bhagavat-priya). Such a paramahamsa may be in any stage of life — brahmacari, grhastha, vanaprastha or sannyasa — and be equally liberated and exalted.
Thus end the Bhaktivedanta purports of the Seventh Canto, Thirteenth Chapter, of the Srimad-Bhagavatam, entitled “The Behavior of a Perfect Person.”