The word(s) "ought" appears 153 time(s) in 146 verse(s) in Quran in Abdullah Yusuf Ali translation.

(51) And he raised his parents high on the throne (of dignity), and they fell down in prostration, (all) before him. He said: "O my father! this is the fulfilment of my vision of old! Allah hath made it come true! He was indeed good to me when He took me out of prison and brought you (all here) out of the desert, (even) after Satan had sown enmity between me and my brothers. Verily my Lord understandeth best the mysteries of all that He planneth to do, for verily He is full of knowledge and wisdom.

(52) But they sought victory and decision (there and then), and frustration was the lot of every powerful obstinate transgressor.

(53) "We have brought to thee that which is inevitably due, and assuredly we tell the truth.

(54) With it He produces for you corn, olives, date-palms, grapes and every kind of fruit: verily in this is a sign for those who give thought.

(55) (We sent them) with Clear Signs and Books of dark prophecies; and We have sent down unto thee (also) the Message; that thou mayest explain clearly to men what is sent for them, and that they may give thought.

(56) When news is brought to one of them, of (the birth of) a female (child), his face darkens, and he is filled with inward grief!

(57) Then to eat of all the produce (of the earth), and find with skill the spacious paths of its Lord: there issues from within their bodies a drink of varying colours, wherein is healing for men: verily in this is a Sign for those who give thought.

(58) It is He Who brought you forth from the wombs of your mothers when ye knew nothing; and He gave you hearing and sight and intelligence and affections: that ye may give thanks (to Allah).

(59) Say, the Holy Spirit has brought the revelation from thy Lord in Truth, in order to strengthen those who believe, and as a Guide and Glad Tidings to Muslims.

(60) Allah sets forth a Parable: a city enjoying security and quiet, abundantly supplied with sustenance from every place: Yet was it ungrateful for the favours of Allah: so Allah made it taste of hunger and terror (in extremes) (closing in on it) like a garment (from every side), because of the (evil) which (its people) wrought.