Bhagavad Gita 6.16
Meditation is not for him who eats too much, nor for him who eats not at all; not for him who is overly addicted to sleep, nor for him who is always awake.
नात्यश्नतस्तु योगोऽस्ति न चैकान्तमनश्नतः।
न चातिस्वप्नशीलस्य जाग्रतो नैव चार्जुन॥nātyaśnatastu yogo'sti na caikāntamanaśnataḥ|
na cātisvapnaśīlasya jāgrato naiva cārjuna||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).