The word(s) "by" appears 750 time(s) in 615 verse(s) in Quran in Mohsin Khan translation.

(501) Have you (O Muhammad صلى الله عليه وسلم) not observed the hypocrites who say to their friends among the people of the Scripture who disbelieve: "(by Allah) If you are expelled, we (too) indeed will go out with you, and we shall never obey any one against you; and if you are attacked (in fight), we shall indeed help you." But Allah is Witness that they verily are liars.

(502) Had We sent down this Qur'an on a mountain, you would surely have seen it humbling itself and rent asunder by the fear of Allah. Such are the parables which We put forward to mankind that they may reflect.

(503) O Prophet! When believing women come to you to give you the Bai'ah (pledge), that they will not associate anything in worship with Allah, that they will not steal, that they will not commit illegal sexual intercourse, that they will not kill their children, that they will not utter slander, intentionally forging falsehood (i.e. by making illegal children belonging to their husbands), and that they will not disobey you in Ma'ruf (Islamic Monotheism and all that which Islam ordains), then accept their Bai'ah (pledge), and ask Allah to forgive them. Verily, Allah is Oft-Forgiving, Most Merciful.

(504) Then when the (Jumu'ah) Salat (prayer) is ended, you may disperse through the land, and seek the Bounty of Allah (by working, etc.), and remember Allah much: that you may be successful.

(505) The disbelievers pretend that they will never be resurrected (for the Account). Say (O Muhammad صلى الله عليه وسلم): Yes! by my Lord, you will certainly be resurrected, then you will be informed of (and recompensed for) what you did; and that is easy for Allah.

(506) No calamity befalls, but by the Leave [i.e. Decision and Qadar (Divine Preordainments)] of Allah, and whosoever believes in Allah, He guides his heart [to the true Faith with certainty, i.e. what has befallen him was already written for him by Allah from the Qadar (Divine Preordainments)]. And Allah is the All-Knower of everything.

(507) Allah sets forth an example for those who disbelieve: the wife of Nuh (Noah) and the wife of Lut (Lot). They were under two of our righteous slaves, but they both betrayed them (their husbands by rejecting their doctrine). So they [Nuh (Noah) and Lut (Lot) عليهما السلام] availed them (their respective wives) not against Allah and it was said: "Enter the Fire along with those who enter!"

(508) Nun. [These letters (Nun, etc.) are one of the miracles of the Qur'an, and none but Allah (Alone) knows their meanings]. by the pen and by what they (the angels) write (in the Records of men).

(509) You (O Muhammad صلى الله عليه وسلم), by the Grace of your Lord, are not mad.

(510) Then there passed by on the (garden) a visitation (fire) from your Lord at night and burnt it while they were asleep.