The lord of the 5th house in the 8th house of the horoscope
BPHS: In the case of the ruler of the 5th bhava occupying the 8th bhava, the native will be less happy with children; he will be troubled by coughing and by lung or respiratory diseases, will be prone to anger and will be unhappy.
This person will have debts and diseases of the respiratory system; he must be content with a small number of children. His guru or employer will be unlucky; such people are irritable and easily lose faith. “Vedic Astrology”. Tom Hopke
Misfortunes, debts, few children, irritability, atheism. Indubala Devi Dasi. “Jyotish, or Vedic Astrology”
There is no happiness from children, an abortion or the death of a child are possible, hostile relations with children, few children, losses from unsuccessful investments, difficulties in love affairs, unreasonableness, difficulty in passing examinations, injustice, immorality; the previous life passed uselessly, and there is no credit for the current one. James Braha, “Ancient Hindu Astrology for the Modern Western Astrologer”
A speech defect, coughing and diseases of the respiratory system, irascibility. The person does not believe in God and does not experience happiness from fatherhood. The children are not especially lucky. Shri G.S. Agarwal
The ability to express oneself creatively appears only if the person is in a regular sexual relationship with the opposite sex. Such people are very passionate. The person educates his children secretly or, possibly, conceives them secretly. The person hides or conceals many things from his children. The person may become a psychologist, a psychiatrist, a sexologist and so on (the lord of education in the house of secrets and sexual relations) or come into contact in some way with children who have been raped or psychologically injured in some way. The person may become a mystic, a tantric or a member of some secret organisation. Such people may spontaneously win the lottery or spontaneously lose everything. The person is not inclined to share his knowledge with others. Kapiel Raaj
The lord of the 5th house in the 8th house is, according to many sources, the strongest Aputra yoga, but from practice — children were born. If the lord of the 5th in the 8th house is in its fall — it is not conducive to the birth of children. The ruler of the 5th house in the dusthanas is in general not conducive to a large number of children. The second child is born more easily. One must look at the 5th house in both spouses. If there are no medical problems, then by working on oneself one can put the situation right and have a child. The 5th house improves. From my experience: when Mars, for Sagittarius ascendants, being the lord of the 5th house, is in its fall in the 8th, it does not give great problems and tragedies in the family, but it does give a small number of children. (Rami Bleckt)