When a mad elephant enters a garden, it spoils all the fruits and flowers. Similarly, if one offends a Vaisnava, he spoils all his spiritual assets

Expressions researched:
"When a mad elephant enters a garden, it spoils all the fruits and flowers. Similarly, if one offends a Vaisnava, he spoils all his spiritual assets"

SB Canto 5

If one offends a Vaiṣṇava, he spoils all his spiritual assets.

SB 5.10.17, Translation and Purport:

My dear sir, I am not at all afraid of the thunderbolt of King Indra, nor am I afraid of the serpentine, piercing trident of Lord Śiva. I do not care about the punishment of Yamarāja, the superintendent of death, nor am I afraid of fire, scorching sun, moon, wind, nor the weapons of Kuvera. Yet I am afraid of offending a brāhmaṇa. I am very much afraid of this.

When Śrī Caitanya Mahāprabhu was instructing Rūpa Gosvāmī at the Daśāśvamedha-ghāṭa in Prayāga, He pointed out very clearly the seriousness of offending a Vaiṣṇava. He compared the vaiṣṇava-aparādha to hātī mātā, a mad elephant. When a mad elephant enters a garden, it spoils all the fruits and flowers. Similarly, if one offends a Vaiṣṇava, he spoils all his spiritual assets. Offending a brāhmaṇa is very dangerous, and this was known to Mahārāja Rahūgaṇa. He therefore frankly admitted his fault. There are many dangerous things—thunderbolts, fire, Yamarāja's punishment, the punishment of Lord Śiva's trident, and so forth—but none is considered as serious as offending a brāhmaṇa like Jaḍa Bharata. Therefore Mahārāja Rahūgaṇa immediately descended from his palanquin and fell flat before the lotus feet of the brāhmaṇa Jaḍa Bharata just to be excused.