The Ordinance from Allah (swt) to reduce to writing your transactions, agreements, contracts, interests, disinterests, rules of engagements, marriage agreements (with members of the opposite sex by birth), etc. is a Pure Mercy from Him (swt).
Human beings require a human (or rather a divine) courtesy and consideration to be informed of what is going on, and what they are involved in. This requires normal conversation via verbally, email, telephone, direct message, text message, tweet, post, postal mail, etc., and when the transaction is complex or needing to have further details explained then it has to be down on paper, etc. Not by medium, psychic, metaphysics, telepathy, secret arts, witchcraft, communications with the dead or evil spirits, etc. (except what God lets you hear as He allowed the Messiah (epbuh) when the Messiah read the minds of some leaders).
It is a human courtesy to humans to be informed of what they are buying; or what project or business idea is being introduced to them; etc. Just working for a clothing retailer requires metadata of information on materials, 100% cotton or blends, temperature rating, sleeve length, neck size, sweep, petite, regular or tall, regular, big or tall, length of garment, inseam, waist, cuffed or uncuffed, does it have wicking, waterproof, water resistant, care instructions, etc. Working on Architectural software to draw up designs requires BIM or Building Information Modeling which is essentially (that word again) metadata of information on building materials, finishing materials, fabrics, colors, thermal ratings, insulation, fire rating, R-ratings for walls, ceilings and floors, U-rating for windows, passive ratings, specifications and dimensions of all building materials, load ratings, topography, and on and on.
It is a Mercy from Allah that He forbade cohabitation with Jinns (Genies). Humans cannot endure unsolicited and uninvited visitations from Jinns taking unseen presence in their living spaces. That type of travelling and communications is unlawful via the rulings in the Torah mentioned below and further refined when Allah forbade cohabitation with Jinns in Surahtul Jinn Ayah 6 mentioned below. This sheds new light on the enormity of a few controversial Hadiths that assigns Shaitans into your living spaces. Allah (swt) said not to cohabitate with them. The Hadiths are giving them the assignment to watch to see if you miss Fajr. But further our bodies are where we dwell with the Ruh of Allah and Jinns cannot cohabitate with us there either. Those 2 particular Hadiths conflict with Surahtul Jinns 6. We as humans cannot have Jinns floating in and out of our living rooms and living spaces performing and engaging in activities that we did not give license to.
Humans require that things be reduced to writing on transactions receipts, descriptions, specifications, instructions, recipes, etc. But in the least be informed verbally of the new interest or topic. We cannot just segway one topic to another and normal verbal communications did not take place and the other person does not know about the new topic or interest. That is Najwa. The Holy Prophets of God reduced their instructions to writing as, of course, did Allah (swt) Himself Who sent those Holy Prophets (epbut). We get many examples of this najwa listed below. One of note referenced below is when the Messiah said, "I do not know you. Away with those who break the Commands or Laws of God." Meaning people will not understand how the Messiah (epbuh) will know but he will know if the persons were on the Truth and kept to the agreement that was left in writing to them in the Old and the New Testament and if they factored updates from the Quran in their practices of the Gospel.
We have to get back to respecting people who are minding their own business (innocent, not shedding blood through the land, nor spreading mischief through the land, righteous, humble, faithful, productive). Mentioned below regarding the women named Folly and how that ties with Najwa or involving someone in plans that they did not consent to be involved in. Respecting people who are minding their own business with righteous intentions is to respect righteousness itself referencing Nabi Salih (epbut) and the She-Camel. Righteousness itself needs to be allowed to heal, grow and thrive again along with appreciation and respect for it. While the Messiah (epbuh) did say to exceed the Pharisees and Sadducees in righteousness, there is none but God that can cover the righteousness that someone else would have done in life. We always have to assume that we cannot cover the righteousness of another (innocent, etc. above).
Reduce to writing agreements, purchases, contracts, transactions, interests, disinterests, rules of engagements, marriage agreements, divorces, business projects, business ideas, etc. Sometimes we have to divorce or disavow ideas in writing as well, not just spouses of the opposite sex. Beware of pivots, activities, or segways to other topics and interests that weren't on the table. Najwa. Humans have to have their freedom of choice. To say, yes or no to something. Even as it pertains to Allah there is no compulsion in religion or life but likewise, they need to enjoy not compelling others away from Allah. A person cannot enjoy not being compelled to God but also enjoy obstructing to God or compelling away from God.
These 2 graphic notecards on "Reduce to writing".