Mahabharata Anushasna Parva Chapter 159:4

Mahabharata Anushasna Parva (Dana Dharma Parva) Chapter 159:4 Unto Rukmini also, the Rishi, well-pleased with her, said, "O beautiful lady, thou shalt be the foremost one of thy sex in fame, and great glory and achievements will be thine. Decrepitude or disease or loss of complexion will never be thine! Every one will see thee engaged in waiting upon Krishna, possessed as thou already art with a fragrant odour which is always present in thee. Thou shalt become the foremost of all spouses, numbering sixteen thousand, O Kesava. At last, when the time comes for thy departure from the world, thou shalt attain to the inseparable companionship of Krishna hereafter!" Having said these words unto thy mother, the Rishi once more addressed me and uttering following words, left the spot. Indeed, the Rishi Durvasa, blazing like a fire, said, "O Kesava, let thy understanding be always disposed even thus towards the Brahmana!" Verily after uttering these words, that Brahmana disappeared there and then before my eyes. After his disappearance I took to the observance of the vow of uttering certain Mantras silently without being heard by anybody. Verily, from that day I resolved to accomplish whatever behests I should receive from the Brahmanas. Having adopted this vow, O son, along with thy mother, both of us, with hearts filled with joy re-entered our palace. Entering our house I saw that everything which the Rishi had broken or burnt had reappeared and become new. Beholding those new articles, which had besides become more durable, I became filled with wonder. Verily, O son of Rukmini, from that day forth I have always worshipped the Brahmanas in my mind!' Even this, O chief of Bharata's race, is what I said on that occasion regarding the greatness of those Brahmanas who are the foremost of their order. Do thou also, O son of Kunti, worship the highly blessed Brahmanas every day with gifts of wealth and kine, O puissant one! It was in this way that I acquired the prosperity I enjoy, the prosperity that is born of the grace of Brahmanas. Whatever, again, Bhishma has said of me, O chief of the Bharatas, is all true!