Ramayana
कामगं स्यन्दनं दिव्यमन्तरिक्षचरं ध्रुवम् । मायां च तामसीं नाम यया सम्पद्यते तमः ॥ 7-25-10 ॥
A divine chariot that goes wherever one wishes and moves unfailingly through the sky, and the magic power named Tamasi, by which darkness is produced.
english translation