This is a quotation from Śrīmad-Bhāgavatam (SB 10.68.37). When the Kauravas flattered Baladeva so that He would become their ally and spoke ill of Śrī Kṛṣṇa, Lord Baladeva became angry and spoke this verse.
That dust (from Krsna's lotus feet) makes the holy places sacred, and even Lord Brahma, Lord Siva, Laksmi and I Myself, who are all portions of His plenary portion, eternally carry that dust on our heads
Expressions researched:
"That dust makes the holy places sacred, and even Lord Brahmā, Lord Śiva, Lakṣmī and I Myself, who are all portions of His plenary portion, eternally carry that dust on our heads"
Sri Caitanya-caritamrta
CC Madhya-lila
“‘What is the value of a throne to Lord Kṛṣṇa? The masters of the various planetary systems accept the dust of His lotus feet on their crowned heads. That dust makes the holy places sacred, and even Lord Brahmā, Lord Śiva, Lakṣmī and I Myself, who are all portions of His plenary portion, eternally carry that dust on our heads.’.
“‘What is the value of a throne to Lord Kṛṣṇa? The masters of the various planetary systems accept the dust of His lotus feet on their crowned heads. That dust makes the holy places sacred, and even Lord Brahmā, Lord Śiva, Lakṣmī and I Myself, who are all portions of His plenary portion, eternally carry that dust on our heads.’