The following can be found in Srila Prabhupada's translation/commentary on the Srimad Bhagavatam. na yat-prasadayuta-bhaga-lesam
anye ca deva guravo janah svayam
kartum sametah prabhavanti pumsas
tam isvaram tvam saranam prapadye
Neither all the demigods, nor the so-called gurus nor all other people, either independently or together, can offer mercy that equals even one ten-thousandth of Yours. Therefore I wish to take shelter of Your lotus feet.
SB 8.24.49
Srila Prabhupada explains:
It is said, kamais tais tair hrta jnanah prapadyante 'nya-devatah: [Bg. 7.20] people in general, being motivated by material desires, worship the demigods to get fruitive results very quickly. People generally do not become devotees of Lord Visnu, since Lord Visnu never becomes the order-supplier of His devotee. Lord Visnu does not give a devotee benedictions that will create a further demand for benedictions. By worshiping the demigods one may get results, but, as described in Bhagavad-gita, antavat tu phalam tesam tad bhavaty alpa-medhasam: [Bg. 7.23] whatever great benedictions one may achieve from the demigods are all temporary. Because the demigods themselves are temporary, their benedictions are also temporary and have no permanent value. Those who aspire for such benedictions have a poor fund of knowledge (tad bhavaty alpa-medhasam). The benedictions of Lord Visnu are different. By the mercy of the Lord Visnu, one can be completely freed from material contamination and go back home, back to Godhead. Therefore the benedictions offered by the demigods cannot compare to even one ten-thousandth of the Lord's benedictions. One should not, therefore, try to obtain benedictions from the demigods or false gurus. One should aspire only for the benediction offered by the Supreme Personality of Godhead. As the Lord says in Bhagavad-gita (18.66):
sarva-dharman parityajya
mam ekam saranam vraja
aham tvam sarva-papebhyo
moksayisyami ma sucah
"Abandon all varieties of religion and just surrender unto Me. I shall deliver you from all sinful reaction. Do not fear." This is the greatest benediction.
SB 8.24.50