Mercury is in Sign and the Sun aspects it:

If Mercury is in Aries and the Sun aspects it, the native is intelligent, learned, and wealthy. He is also a good speaker and writer. The Moon makes him even more intelligent and learned. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Taurus and the Sun aspects it, the native is wealthy, learned, and famous. He is also a good speaker and writer. He is also fond of music and fine arts. The Moon makes him even more wealthy and learned. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Gemini and the Sun aspects it, the native is very intelligent, learned, and wealthy. He is a good speaker and writer. He is also fond of traveling and the occult sciences. The Moon makes him even more intelligent and learned. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Cancer and the Sun aspects it, the native is devoid of happiness, and is troubled by diseases. He is inimical to his mother, and is bereft of landed property and vehicles. The Moon makes him even more unhappy and troubled by diseases. Mars makes him courageous and adventurous, but also short-tempered and prone to accidents. Jupiter makes him wealthy, happy, and famous, but he may also be extravagant and wasteful. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Leo and the Sun aspects it, the native is endowed with wealth, happiness, and fame. He is strong, victorious, and has many brothers. The Moon makes him even more wealthy and happy. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Virgo and the Sun aspects it, the native is bereft of wealth and sons. He is unhappy, and has few friends. The Moon makes him even more unhappy and bereft of friends. Mars makes him courageous and adventurous, but also short-tempered and prone to accidents. Jupiter makes him wealthy, happy, and famous, but he may also be extravagant and wasteful. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Libra and the Sun aspects it, the native is victorious over his enemies. He is endowed with wealth and happiness, and is free from diseases. The Moon makes him even more victorious over his enemies and free from diseases. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Scorpio and the Sun aspects it, the native has a sickly wife. He is bereft of happiness, and is troubled by diseases. The Moon makes him even more bereft of happiness and troubled by diseases. Mars makes him courageous and adventurous, but also short-tempered and prone to accidents. Jupiter makes him wealthy, happy, and famous, but he may also be extravagant and wasteful. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Sagittarius and the Sun aspects it, the native is short-lived, bereft of wealth, and suffers from diseases of the eyes. The Moon makes him even more short-lived and bereft of wealth. Mars makes him courageous and adventurous, but also short-tempered and prone to accidents. Jupiter makes him wealthy, happy, and famous, but he may also be extravagant and wasteful. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Capricorn and the Sun aspects it, the native is bereft of wealth and happiness. He is irreligious, and has an unhappy father. The Moon makes him even more bereft of wealth and happiness. Mars makes him courageous and adventurous, but also short-tempered and prone to accidents. Jupiter makes him wealthy, happy, and famous, but he may also be extravagant and wasteful. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Aquarius and the Sun aspects it, the native is endowed with wealth, happiness, and fame. He is engaged in virtuous deeds, and is respected by the king. The Moon makes him even more wealthy, happy, and famous. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

If Mercury is in Pisces and the Sun aspects it, the native is endowed with wealth, happiness, and fame. He has many friends, and is engaged in virtuous deeds. The Moon makes him even more wealthy, happy, and famous. Mars makes him courageous and adventurous. Jupiter makes him wealthy, happy, and famous. He is also religious and charitable. Venus makes him lustful, passionate, and adulterous. Saturn makes him jealous, envious, and quarrelsome. He is also likely to suffer from diseases.

(e) General:

Mercury is considered a benefic planet, but it can also give bad results if it is ill-placed in a horoscope or associated with malefic planets. It is important to consult an astrologer to get a detailed analysis of your horoscope and to find out how Mercury is placed in your chart.