Vijnana Bhairava Tantra
कालाग्निना कालपदादुत्थितेन स्वकं पुरम् । प्पुष्टं विचिन्तयेदन्ते शान्ताभासस्तदा भवेत् ॥ ५२ ॥
One should contemplate that one's own body has been burnt by Kaalagni, arising, from the movement of time. Then at last one will experience tranquility.
english translation