Text 306]
The Lord Instructs Sanātana Gosvāmī
171
TRANSLATION
“If in a kalpa a suitable living entity is not available to take charge of Brahmā’s post, the Supreme Personality of Godhead Himself personally expands and becomes Lord Brahmā.
PURPORT
One day of Brahmā consists of the four  yugas  multiplied a thousand times—or, according to solar calculations, 4,320,000,000 years—and such also is the duration of his night. One year of Brahmā’s life consists of 360 days and nights, and Brahmā lives for one hundred such years. Such is the life of a Brahmā.
TEXT 306
যস্ত্রাজ্জি পঙ্করজোহথিললোকপালৈ- মৌল্যব্তমৈধ্বতম্পাসিত-তীর্থতীর্থম্। ব্রহ্মাভবোহহমপি যস্ত্র কলাঃ কলায়াঃ শ্রীশ্চোদ্বহেম চিরমস্ত্র নৃপাসনং ক ॥ ৩০৬ ॥
yasyāṅghri-paṅkaja-rajo ‘khila-loka-pālair mauly-uttamair dhṛtam upāsita-tīrtha-tīrtham brahmā bhavo ‘ham api yasya kalāḥ kalāyāḥ śrīś codvahema ciram asya nṛpāsanaṁ kva
SYNONYMS
yasya —whose;  aṅghri-paṅkaja —lotuslike feet;  rajaḥ —the dust;  akhila-loka —of the universal planetary systems;  pālaiḥ —by the masters;  mauli-uttamaiḥ —with valuable turbans on their heads;  dhṛtam —accepted;  upāsita —worshiped;  tīrtha-tīrtham —the sanctifier of the holy places;  brahmā —Lord Brahmā;  bhavaḥ —Lord Śiva;  aham api —even I;  yasya —of whom;  kalāḥ —portions;  kalāyāḥ —of a plenary portion;  śrīḥ —the goddess of fortune;  ca —and;  udvahema —we carry;  ciram —eternally;  asya —of Him;  nṛpa-āsanam —the throne of a king;  kva —where.
TRANSLATION
“‘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.’