《后汉书·列传·申屠刚鲍永郅恽列传》
刘氏受命于天，命长而未绝，陛下当顺其时之盛衰，取之以天，还之以天，可以说是知命的了。
刘氏享天永命，陛下顺节盛衰，取之以天，还之以天，可谓知命矣。
The Liu family received its mandate from Heaven, and its mandate was long and had not ended; Your Majesty should follow the prosperity and decline of its time, take it from Heaven, and return it to Heaven; this may be called knowing destiny.