From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
To prevent that the Fire on the Hearth becomes extinguished.
When a new house is built, write upon three separate pieces of paper: Deus Pater, Deus Filius, Deus Spiritus Sanctus in Oleum Trinitatis Sun and Moon have their course over water and over land, that no fire and flame in this house shall cease. For this, three tin boxes must be made, and in each one the above inscriptions be placed, and on three corners under the threshold or stones be laid, so that they do not decay or moulder in the ground, and the fires in such a house will never go out.
The grimoire Egyptian Secrets of Albertus Magnus lists this spell.
Timeline of related events
1725Publication of Egyptian Secrets of Albertus Magnus (lists this spell)
1869English-language translation of Egyptian Secrets (lists this spell)