SB 4.22.8
kim tasya durlabhataram
iha loke paratra ca
yasya viprah prasidanti
sivo visnus ca sanugah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Any person upon whom the brahmanas and Vaisnavas are pleased can achieve anything which is very rare to obtain in this world as well as after death. Not only that, but one also receives the favor of the auspicious Lord Siva and Lord Visnu, who accompany the brahmanas and Vaisnavas.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The brahmanas and Vaisnavas are the bearers of Lord Visnu, the all-auspicious. As confirmed in the Brahma-samhita (5.38):
premañjana-cchurita-bhakti-vilocanena
santah sadaiva hrdayesu vilokayanti
yam syamasundaram acintya-guna-svarupam
govindam adi-purusam tam aham bhajami
The devotees, out of their extreme love for Govinda, the Supreme Personality of Godhead, always carry the Lord within their hearts. The Lord is already in the heart of everyone, but the Vaisnavas and the brahmanas actually perceive and see Him always in ecstasy. Therefore brahmanas and Vaisnavas are carriers of Visnu. Wherever they go, Lord Visnu, Lord Siva or the devotees of Lord Visnu are all carried. The four Kumaras are brahmanas, and they visited the place of Maharaja Prthu. Naturally Lord Visnu and His devotees were also present. Under the circumstances, the conclusion is that when the brahmanas and Vaisnavas are pleased with a person, Lord Visnu is also pleased. This is confirmed by Srila Visvanatha Cakravarti Thakura in his eight stanzas on the spiritual master: yasya prasadad bhagavat-prasadah. By pleasing the spiritual master, who is both brahmana and Vaisnava, one pleases the Supreme Personality of Godhead. If the Supreme Personality of Godhead is pleased, then one has nothing more to achieve either in this world or after death.