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

(181) He sends down the angels with the inspiration by His commandment on whom He pleases of His servants, saying: Give the warning that there is no god but Me, therefore be careful (of your duty) to Me.

(182) He it is Who sends down water from the cloud for you; it gives drink, and by it (grow) the trees upon which you pasture.

(183) He causes to grow for you thereby herbage, and the olives, and the palm trees, and the grapes, and of all the fruits; most surely there is a sign in this for a people who reflect.

(184) And He has made subservient for you the night and the day and the sun and the moon, and the stars are made subservient by His commandment; most surely there are signs in this for a people who ponder;

(185) And landmarks; and by the stars they find the right way.

(186) And they swear by Allah with the most energetic of their oaths: Allah will not raise up him who dies. Yea! it is a promise binding on Him, quite true, but most people do not know;

(187) Or that He may not seize them by causing them to suffer gradual loss, for your Lord is most surely Compassionate, Merciful.

(188) And they set apart for what they do not know a portion of what We have given them. by Allah, you shall most certainly be questioned about that which you forged.

(189) by Allah, most certainly We sent (apostles) to nations before you, but the Shaitan made their deeds fair-seeming to them, so he is their guardian today, and they shall have a painful punishment.

(190) And be not like her who unravels her yarn, disintegrating it into pieces after she has spun it strongly. You make your oaths to be means of deceit between you because (one) nation is more numerous than (another) nation. Allah only tries you by this; and He will most certainly make clear to you on the resurrection day that about which you differed.