The tax that is taken from the free non-Muslim subjects of a Muslim government whereby they ratify the compact that assures them protection, as though it were compensation for not being slain.
Through Yoga, anybody can attain; it's a God realisation; you just practise Yoga and if you really mean it, then you'll do it. There's Yogis that have done it to such a degree that they're God, they're like Christ and they can walk on the water and materialise bodies and they can do all those tricks.