Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 313


प्रौष्ठपद्यां पौर्णमास्यां हेमसिंहसमन्वितम् ।ददाति यो भागवतं स याति परमां गतिम् ॥ १३ ॥


prauṣṭhapadyāṁ paurṇamāsyāṁhema-siṁha-samanvitamdadāti yo bhāgavataṁsa yāti paramāṁ gatim


If on the full moon day of the month of Bhādra one places Śrīmad-Bhāgavatam on a golden throne and gives it as a gift, he will attain the supreme transcendental destination.


One should place Śrīmad-Bhāgavatam on a golden throne because it is the king of all literature. On the full-moon day of the month of Bhādra, the sun, which is compared to this king of literatures, is present in the constellation Leo and looks as if raised up on a royal throne. (According to astrology, the sun is said to be exalted in the sign of Leo). Thus one may unreservedly worship Śrīmad-Bhāgavatam, the supreme divine scripture.