SB 6.15.11
caranti hy avanau kamam
brahmana bhagavat-priyah
madrsam gramya-buddhinam
bodhayonmatta-linginah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Brahmanas who are exalted to the position of Vaisnavas, the most dear servants of Krsna, sometimes dress like madmen. Just to benefit materialists like us, who are always attached to sense gratification, and just to dissipate our ignorance, these Vaisnavas wander on the surface of the globe according to their desire.