'This ram is with testicles and Indra is indeed rendered testicle-less. Taking the testicles of this ram they may be given to Indra quickly.' ( Thus Fire-god started his appeal to manes ). [1-49-6]
अफलस्तु कृतो मेषः परां तुष्टिं प्रदास्यति | भवतां हर्षणार्थाय ये च दास्यन्ति मानवाः | अक्षयं हि फलं तेषां यूयं दास्यथ पुष्कलम् || १-४९-७
'This ram that is being offered to you shall now be gelded to give its testes to Indra, and though this ram is deprived of its organ it will be complete and it endows complete satisfaction to you. To those humans who hereafter offer testes-less rams in sacrifices for the purpose of your gratification, you shall truly offer them plentiful and unmitigated benefits.' ( Thus Agni, the Fire-god spoke to manes ). [1-49-7]
On hearing the words of Agni, the Fire-god, the manes-gods who gathered to collect their share of offering have extricated that ram's testes and offered them to the Thousand-eyed Indra. [1-49-8]
Oh ! Rama of Kakutstha, from then on the pitrudevatas ( manes-gods ) have been accepting rams without testicles as offerings in a sacrifice, with ram's testicles fitted on to Indra. [1-49-9]