Mantra 4

यो ह वै सम्पदं वेद संहास्मै कामाः पद्यन्ते दैवाश्च मानुषाश्च श्रोत्रं वाव सम्पत् ॥ ५.१.४ ॥

In plain words

He who knows attainment — desires come to him, both divine and human. The ear is attainment.