The word(s) "by" appears 450 time(s) in 398 verse(s) in Quran in Muhammad Habib Shakir translation.

(271) And those who were deemed weak shall say to those who were proud. Nay, (it was) planning by night and day when you told us to disbelieve in Allah and to set up likes with Him. And they shall conceal regret when they shall see the punishment; and We will put shackles on the necks of those who disbelieved; they shall not be requited but what they did.

(272) And the two seas are not alike: the one sweet, that subdues thirst by its excessive sweetness, pleasant to drink; and the other salt, that burns by its saltness; yet from each of them you eat fresh flesh and bring forth ornaments which you wear; and you see the ships cleave through it that you may seek of His bounty and that you may be grateful.

(273) And a burdened soul cannot bear the burden of another and if one weighed down by burden should cry for (another to carry) its burden, not aught of it shall be carried, even though he be near of kin. You warn only those who fear their Lord in secret and keep up prayer; and whoever purifies himself, he purifies himself only for (the good of) his own soul; and to Allah is the eventual coming.

(274) Then We gave the Book for an inheritance to those whom We chose from among Our servants; but of them is he who makes his soul to suffer a loss, and of them is he who takes a middle course, and of them is he who is foremost in deeds of goodness by Allah's permission; this is the great excellence.

(275) And they swore by Allah with the strongest of their oaths that if there came to them a warner they would be better guided than any of the nations; but when there came to them a warner it increased them in naught but aversion.

(276) I swear by the Quran full of wisdom

(277) But (by) mercy from Us and for enjoyment till a time.

(278) I swear by those who draw themselves out in ranks

(279) He shall say: by Allah! you had almost caused me to perish;

(280) And most surely you pass by them in the morning,