Should one meditate out of a desire for the profit of this life, a desire for fame, a desire for the eight worldly Dharmas, a desire for respect and reputation, whatsoever karma accrued thereby will not even become meaningful for future lives. It is said in the general Guhyasamāja Tantra: Thou shalt not desire results for this life: Having desired this life, there will be no benefit for later worlds. Having given rise to aspiration for the import of other worlds, the results of this world have been enhanced!

-- 5th Panchen Lobsang Yeshe