C. F. Keil and Franz Delitzsch on 1 Kings 8:5

1Ki 8:5 “And king Solomon and the whole congregation, that had gathered round him, were with him before the ark sacrificing sheep and oxen in innumerable multitude.” This took place while the ark of the covenant was carried up, no doubt when it was brought into the court of the temple, and was set down there for a time either within or in front of the hall. Then was this magnificent sacrifice “offered” there “in front of the ark” (הארון לפני).