Ramayana
त्र्यहोऽश्वमेधः संख्यातः कल्पसूत्रेण ब्राह्मणैः । चतुष्टोममहस्तस्य प्रथमं परिकल्पितम् ॥ १-१४-४०
According to Kalpa sutra, aswamedha in conducted for three days. In the first day, chatushtoma is arranged. ॥ 1-14-40॥
english translation
tryaho'zvamedhaH saMkhyAtaH kalpasUtreNa brAhmaNaiH । catuSTomamahastasya prathamaM parikalpitam ॥ 1-14-40
hk transliteration by Sanscript