Charak Samhita
वर्णस्वरावग्निबलं वागिन्द्रियमनोबलम्। हीयतेऽसुक्षये निद्रा नित्या भवति वा न वा ॥२४॥
Near the end of life there is general decline in complexion, voice, agni, speech and state of mind, as well as sleep pattern alters.
english translation
varNasvarAvagnibalaM vAgindriyamanobalam। hIyate'sukSaye nidrA nityA bhavati vA na vA ॥24॥
hk transliteration by Sanscript