Budha-Āditya · Mercury with the Sun

Budha-Āditya, called Nipuna yoga in some texts, forms when Mercury and the Sun share a sign. The tradition reads the pairing as a mark of intelligence, skill, and clear speech, the mind lit by the same light that rules the self.

But Mercury beside the Sun is Mercury in danger of being burned. When it sits too close, within a few degrees, classical astrology calls it combust, astaṅgata, and the very nearness that forms the yoga is read to weaken the planet the yoga depends on. So the reading turns on distance: near enough to join the Sun’s sign, far enough to survive standing next to it.

The same nearness that makes the yoga can unmake the planet.

And this is one of the most common placements in the sky. Mercury never wanders more than about twenty-eight degrees from the Sun, so the two share a sign in a large share of all charts. Its presence alone tells you little. What the tradition weighs is whether Mercury kept its strength, and whether a daśā ever brings it to speak.