Buddha Aditya Yoga
Buddha Aditya Yoga is the combination of the Sun and Mercury. The person will be intelligent, capable, silent, and respected in society.
Shri Govind Swarup Agarwal - "Vedic Astrology"
Budha Aditya Yoga is formed when Mercury and the Sun are in the same house. Aditya is one of the names of the Sun. Budha is Mercury. In fact, this is combustion. But Mercury and the Sun are friends, so the negative effect of combustion is neutralized in some cases. In addition, Mercury is closest to the Sun and combustion is familiar to it. Budha Aditya Yoga indicates intelligence and highly educated individuals. It shows good communication skills, the ability to convey information, and a person's abilities in various sciences, including astrology. This yoga is very common (Mercury does not move more than 28º away from the Sun in the Zodiac), so to understand how it will manifest in life (as weakened Mercury or as Budha Aditya Yoga), it is necessary to analyze the house in which this combination is present, as well as the entire chart as a whole.
B.V. Raman notes that Budha Aditya Yoga manifests its power when Mercury is at least 10º away from the Sun.
The planet in conjunction with the Sun becomes particularly significant and prominent in the native's life. The Sun is the significator of energy, life, vitality, health, ego, so the house where the conjunction of the Sun and any planet occurs becomes important and prominently expressed. It is also important to pay attention to the houses ruled by the planets involved in the yoga. Mercury is the significator of intelligence, analytical abilities, exact sciences, concentration, memory. Indeed, the conjunction of the Sun and Mercury is very common in natal charts, but not all individuals with this combination have outstanding intelligence, good memory, love, and abilities in exact sciences.
Budha Aditya Yoga, first and foremost, emphasizes the intelligence of the native, but not always in a positive aspect. This depends on the position of the Sun and/or Mercury in signs and, accordingly, in houses. If both planets feel good, then all the positive aspects of Budha Aditya Yoga manifest, and vice versa, if the planets (or one of them) feel bad, serious problems with intelligence, memory, analytical abilities, causal relationships, and concentration can arise. It is also important to consider the proximity of Mercury to the Sun and the presence of combustion of Budha. When Mercury is within two degrees of the Sun, this combination takes on an extremely negative character, and all the indicators of Mercury suffer, such as intelligence, memory, counting, nervous system, psyche, skin, intestines, the person cannot concentrate, and the native may experience diseases related to the loss of intelligence. If Mercury is combust (kopa), but does not fall within the two-degree range of the Sun, then the native, with good intellectual data, may be aggressive, confrontational, and scandalous. For example, when defending their scientific views, they publicly insult their opponent and may even resort to physical violence.
If Mercury is ahead of the Sun in degrees, the person is more inclined towards subjective thinking.
It should be noted that in the Kali Yuga, the Sun (Kruura Graha) is also a Papa Graha, so the conjunction of Mercury and the Sun will manifest, in addition to positive aspects, some negative aspects. This is more pronounced if the planets (one or both) feel bad, and to a lesser extent if they are in a good position. Firstly, the native will have some problems with the state and authority. Secondly, this combination manifests instability in the native's material position, except when Budha Aditya Yoga is in the fourth house.
In the Ascendant, when Budha Aditya Yoga is in a good position, it indicates longevity.
(from "THREE HUNDRED IMPORTANT COMBINATIONS" by B.V. Raman)
Definition.—If Mercury combines with the Sun, the combination goes under the name of Budha-Aditya Yoga.
Results.—Highly intelligent, skilful in all works, good reputation, personal respect, and surrounded by all comforts and happiness.
Remarks.—Generally, any planet in association with the Sun becomes combust or Astha and loses its power to do good, perhaps Mercury is an exception. It should not be taken for granted that irrespective of the distance between the Sun and Mercury, Budha-Aditya Yoga would be present. On the contrary, Mercury should not be within 10° of the Sun to give rise to Budha-Aditya Yoga. This combination is not, of course, rare.
We continue to explore the combinations of two planets in a person's horoscope. Today, we will consider the position of the Sun and Mercury in the same house. This yoga is known as Buddha Aditya Yoga. It endows a person with a strong mind, beautiful speech, high qualifications in work, excellent logic, etc. But here's the thing, this yoga can be found in half of humanity. Why doesn't it yield results? How to correctly analyze yogas in a horoscope?