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

(61) Say: If there had been (other) gods with Him, as they say,- behold, they would certainly have sought out a way to the Lord of the Throne!

(62) Each of those gardens brought forth its produce, and failed not in the least therein: in the midst of them We caused a river to flow.

(63) "Nor do I deem that the Hour (of Judgment) will (ever) come: Even if I am brought back to my Lord, I shall surely find (there) something better in exchange."

(64) And they will be marshalled before thy Lord in ranks, (with the announcement), "Now have ye come to Us (bare) as We created you first: aye, ye thought We shall not fulfil the appointment made to you to meet (Us)!":

(65) One Day He will say, "Call on those whom ye thought to be My partners," and they will call on them, but they will not listen to them; and We shall make for them a place of common perdition.

(66) And what is there to keep back men from believing, now that Guidance has come to them, nor from praying for forgiveness from their Lord, but that (they ask that) the ways of the ancients be repeated with them, or the Wrath be brought to them face to face?

(67) "Those whose efforts have been wasted in this life, while they thought that they were acquiring good by their works?"

(68) At length she brought the (babe) to her people, carrying him (in her arms). They said: "O Mary! truly an amazing thing hast thou brought!

(69) "Behold! thy sister goeth forth and saith, 'shall I show you one who will nurse and rear the (child)?' So We brought thee back to thy mother, that her eye might be cooled and she should not grieve. Then thou didst slay a man, but We saved thee from trouble, and We tried thee in various ways. Then didst thou tarry a number of years with the people of Midian. Then didst thou come hither as ordained, O Moses!

(70) "Then he brought out (of the fire) before the (people) the image of a calf: It seemed to low: so they said: This is your god, and the god of Moses, but (Moses) has forgotten!"