Tafsir of As-Saffat 37:5

Indeed, their existence in this wondrous fashion is the clearest proof of His Oneness, Exalted is He; rather, in every atom of the world's atoms, there is evidence for that:

And in everything, there is a sign That indicates He is One.

"Lord" (Rabb) is a second predicate, according to the school of those who permit multiple predicates, or it is the predicate of an omitted subject, or it is The Lord of the heavens, etc. Abu al-Baqa and others permitted it to be a substitute (badal) for "One" (Wahid), as it is the intended meaning of the attribution—that is, the Creator of the heavens and the earth and whatever existents are between them. The generality of the relative pronoun (ma) includes the actions of servants; thus, the verse indicates that they are created by Him, Exalted is He. This does not negate the fact that the servant's power has an effect by His permission, Exalted is He, as most of the predecessors maintained—even al-Ash’ari himself, in the final assessment, according to what some eminent scholars have stated. Some have interpreted "Lord" here as "King" or "Owner," but the first is perhaps more evident. There is discussion regarding the verse's indication that the actions of servants are created by Him in that manner.

The intent by "the easts" (al-mashariq) is the collection of the sun's rising points, for they are the ones known and common among them, and they are equal to the number of the days of the year, as it rises every day from a specific east and sets in a specific west. Thus, the west points are as numerous as the east points, and the sufficiency of mentioning only the east points is as if to imply the west, given that the rising is more indicative of power and more profound as a blessing; this is why Ibrahim (peace be upon him) used it as evidence when debating Nimrod.

It is reported from Ibn Atiyyah that the sun's rising points are one hundred and eighty. Some have reconciled this with what the aforementioned multiplication implies by stating that its rising points from the head of Cancer (the first of the summer signs) to the head of Capricorn (the first of the winter signs) are unified with those from the head of Capricorn to the head of Cancer. If one considers the state it was in and the state to which it returned as one, it is one hundred and eighty; if one looks at their difference, it is three hundred and sixty. In this, there is an omission of the fraction, for the solar year exceeds that number by about six days, as is clarified in its proper place.

"The easts" has also been interpreted as the rising points of the planets. It is argued that this is more appropriate for the words of the Exalted thereafter, “Indeed, We have adorned the lowest heaven...” for the planets vary in number. Most of them have rising points, according to what was known to the ancients, such as Saturn, whose rising points until it completes its cycle are more numerous than the rising points of the sun until it completes its cycle by thousands; and the rising points of the fixed stars until they complete their cycle are even more numerous. Do not be heedless, and observe.

The duality of "the east" and "the west" in the words of the Exalted, “Lord of the two easts and Lord of the two wests,” refers to the east of summer and the east of winter, and their respective west points. The repetition of "Lord" here with "the easts" is for the sake of the manifestation of the effects of Lordship within them and their renewal every day.