In the Caitanya-caritāmṛta, the total universes in the external potency of the Lord are compared to a bucketful ofmustard seeds. One mustard seed is calculated to be a universe itself. In one of the universes, in which we are now living, the number of planets cannot be counted by human energy, and so how can we think of the sum total in all the universes, which are compared to a bucketful of mustard seeds? And the planets in the spiritual sky are at least three times the number of those in the material sky. Such planets, being spiritual, are in fact transcendental to the material modes; therefore they are constituted in the mode of unalloyed goodness only. The conception of spiritual bliss (brahmānanda) is fully present in those planets. Each of them is eternal, indestructible and free from all kinds of inebrieties experienced in the material world.
(SRIMAD BHAGAVATAM------2:6:18-----PURPORT).

There is a special reference for the maintenance of Bengali Vaiṣṇavas. A Gauḍīya Vaiṣṇava is a Bengali Vaiṣṇava. Most of the devotees of Lord Caitanya at that time were Gauḍīyas and Oriyās, inhabitants of Bengal and Orissa. There are still many hundreds of thousands of His followers in Bengal and Orissa. Bengalis are habituated to eating cooked rice as their staple food. When they went to Mathurā in the north, they found that the people generally ate capatis or roṭis made of wheat. The Bengalis could not digest this food because they were used to cooked rice. Therefore as soon as Subuddhi Rāya saw a Bengali Vaiṣṇava arriving in Mathurā, he would try to supply him with cooked rice. Bengalis are also accustomed to taking a massage with mustard oil. In any case, Subuddhi Rāya wanted to serve the Vaiṣṇavas according to their needs. Therefore he would supply yogurt to ease the digestion of food eaten in Mathurā, particularly the capatis and roṭis made with wheat.
(SRI CAITANYA CARITAMRTA-------2:25:206------PURPORT).

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