Valmiki Ramayana Bala Kanda Sarga 49 Shloka 6
Original Shlokaअयं मेषस्सवृषणश्शक्रो ह्यवृषण: कृत:। मेषस्य वृषणौ गृह्य शक्रायाऽशु प्रयच्छथ।।1.49.6।।
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अयम् this, मेष: the ram, सवृषण: has testicles, शक्र: Indra, अवृषण: is without testicles, कृत: हि has been rendered, मेषस्य ram's, वृषणौ testicles, गृह्य taking, आशु immediately, शक्राय for Indra, प्रयच्छथ furnish.
'This ram (which has received the share of your sacrificial offerings) has testicles. As Indra has been deprived of his own take these testicles immediately and graft them on to Indra'.