Spiritual career
Srimad-Bhagavatam
SB Canto 6
If one becomes like a mad elephant and commits offenses at the lotus feet of a Vaiṣṇava, his entire spiritual career is halted
SB 6.17.15, Purport: One should be very careful not to commit offenses at the lotus feet of Vaiṣṇavas, of whom Lord Śiva is the best. While instructing Śrīla Rūpa Gosvāmī, Śrī Caitanya Mahāprabhu described an offense at the lotus feet of a Vaiṣṇava as hātī mātā, a mad elephant. When a mad elephant enters a nice garden, it spoils the entire garden. Similarly, if one becomes like a mad elephant and commits offenses at the lotus feet of a Vaiṣṇava, his entire spiritual career is halted. One should therefore be very careful not to commit offenses at the lotus feet of a Vaiṣṇava.