In the tantras it is said: Anyone who offers respects and obeisances to the Deity while wearing garments on the upper portion of his body is condemned to be a leper for seven births

Expressions researched:
"Anyone who offers respects and obeisances to the Deity while wearing garments on the upper portion of his body is condemned to be a leper for seven births"

Sri Caitanya-caritamrta

CC Antya-lila

“Anyone who offers respects and obeisances to the Deity while wearing garments on the upper portion of his body is condemned to be a leper for seven births.”.

CC Antya 12.37, Translation and Purport

When Śrīkānta offered obeisances to the Lord, he was still wearing his shirt and coat. Therefore Govinda told him, “My dear Śrīkānta, first take off these garments.”

One is forbidden to enter the Deity room or offer anything to the Deity while wearing a shirt or coat. In the tantras it is said:

vastreṇāvṛta-dehas tu yo naraḥ praṇamed dharim

śvitrī bhavati mūḍhātmā sapta janmāni bhāvini

“Anyone who offers respects and obeisances to the Deity while wearing garments on the upper portion of his body is condemned to be a leper for seven births.”