Indirect Resource (Pian Yin, 偏印)

What the classic Yuan Hai Zi Ping (渊海子平) says

Its section On the Overturned Meal (论倒食), whole.

The Overturned Meal (倒食) means the star that strikes at the god of wealth (财神); another name for it is the devouring malefic (吞啗煞). Where Wealth (财) is the useful element (用神) it is very much unwelcome, and where Eating God (食神) is the useful element it is unwelcome too. It is Yang Wood (甲) meeting Yang Water (壬) and the like. Yang Wood meeting Yang Fire (丙) is Eating God, which can produce the Earth that is Yang Wood's Wealth — but Yang Water controls Yang Fire, and a Yang Fire held down cannot produce Yang Wood's Earth wealth. That is why a Yang Wood using Eating God so dislikes seeing it. A chart carrying both is read as thin in blessing and short in years. Where Yang Metal (庚) appears as Seven Killings (七杀) and Yang Fire or Yin Fire (丁) hold it down, Water arriving turns the whole thing to misfortune. Anyone whose chart carries this is like a person governed by an elder and not free: they advance and then draw back and give up, begin without finishing, make a living and lose it and make it again, and are read as crooked in feature, small in frame, timid and easily alarmed, with nothing brought to completion. Take [Fire Goat, Fire Goat, Earth Pig, Fire Rabbit (丁未 丁未 己亥 丁卯)]. This is an Earth Pig (己亥) day, the Yin Earth (己) standing on Pig (亥) and weak there; the Pig-Rabbit-Goat (亥卯未) Wood frame controls the self, and three Yin Fire show in the year, month and hour eating the Yin Earth. In youth the fortune ran south, and Fire producing Earth kept the self strong. As soon as it turned to the Wood Snake (乙巳) period — Yin Earth's Seven Killings — it drew out the Pig-Rabbit-Goat frame, and in the Water Pig (癸亥) year he died. The misfortune here is not only the Overturned Meal and Seven Killings: a Water Pig year is the same case as producing the Killings (杀) and spoiling the Resource (印). Take [Wood Dog, Fire Tiger, Wood Dog, Water Monkey (甲戌 丙寅 甲戌 壬申)]. A Wood Dog (甲戌) day with a Yang Fire for Eating God, born in the first month with the Wood strong, so self and Eating God are both strong and it is a chart of rank by nature. But it does not sit well with the Water Monkey (壬申) hour: the Yang Water injures the Yang Fire and the Monkey (申) clashes the Tiger (寅), and Monkey holds a Yang Metal for Seven Killings. So neither profit nor name came of it. Running the Earth Snake (己巳) period, ground where Metal is produced, he met a Metal Rat (庚子) year — Yang Metal as Seven Killings with Rat (子) water behind it — and died an unnatural death.

夫倒食者，冲财神之谓也；一名『吞啗煞』。用财神大忌见之，用食神亦忌见之。 倒食者，如甲见壬之类。如甲见丙为食神，能生土财；然壬剋丙火，丙火不能生甲木之土财，所谓甲用食神，大忌见之。 凡命中带此二者，主福浅寿薄。 又见庚为七杀，得丙丁火制之，怕见水，反为祸矣！凡命中犯此者，犹尊长之制我身，不得自由也。作事进退悔懒、有始无终、财源屡成屡败、容貌攲斜、身品矮小、胆怯心慌，凡事无成也。 如【丁未，丁未，己亥，丁卯】：此命己亥日，己临亥上，身弱于亥；加以亥卯未木局剋身，年月时透出三丁食己。幼年行南方运，赖火生土，身犹旺；纔交乙巳运，为己之七杀，引出亥卯未木局，岁运癸亥，所以死矣！此命非但倒食七杀之祸，而癸亥年与生杀坏印之说同义也。 如【甲戌，丙寅，甲戌，壬申】：此命甲戌日，甲见丙食神，生于正月，甲木旺，身与食神俱旺，本是贵命；不合时上壬申，壬水伤其丙火，申金冲其寅木；又申中有庚七杀，所以利名无成。行己巳运金生之地，见庚子年；庚金为七杀，又见子水，死于非命。