Anandakanda 1.22.13

1.22.13

sūtreṇa bandhayeddhaste vīryastambho bhaveddhruvam /
aśvinyāmāhareddhīmān palāśasya tu bandhakam //

he should tie it to his hand with a thread, and surely retention of semen occurs. / Under Aśvinī, the wise man should gather the parasite of a palāśa;