Canto 1 - Boyhood
Bāla-kāṇḍa
Chapter 19: Viśvāmitra Requests Daśaratha to Give Rāma
Text 1.19.5

व्रते मे बहुशश्चीर्णे समाप्त्यां राक्षसाविमौ।
मारीचश्च सुबाहुश्च वीर्यवन्तौ सुशिक्षितौ।
समांसरुधिरौघेण वेदिं तामभ्यवर्षताम्॥

vrate me bahuśaś cīrṇe samāptyāṁ rākṣasāv imau
mārīcaś
ca subāhuś ca vīryavantau suśikṣitau
samāṁsa-rudhiraugheṇa
vediṁ tām abhyavarṣatām

vrate = vow; me = my; bahuśaḥ = almost; cīrṇe = when was done; samāptyām = towards the end of the sacrificial performance; rākṣasau = rākṣasas; imau = those two; mārīcaḥ ca = Mārīca; subāhuḥ ca = and Subāhu; vīryavantau = powerful; suśikṣitau = and very learned; sa-māṁsa-rudhira-ogheṇa = a stream of blood with flesh; vedim = sacrificial platform; tām = on the; abhyavarṣatām = let loose.

When my vow was almost done, towards the end of the sacrificial performance, those two powerful and very learned rākṣasas Mārīca and Subāhu let loose a stream of blood with flesh on the sacrificial platform.