Jñāneśvarī (commentary on the Bhagavadgītā) 9.174

9.174

sāṃvarī vāḍhinnalyā saraḷā |
varī phaḷa nā āṃtu pokaḷā |
kāṃ stana jāle gaḷāṃ |
śeḷiye jaise ||

Or like silk-cotton trees growing straight, / bearing no fruit above and hollow within, / or like the fleshy wattles grown on the neck / of a she-goat;