The word(s) "forbidden" appears 42 time(s) in 37 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) Many of them dost thou see, racing each other in sin and rancour, and their eating of things forbidden. Evil indeed are the things that they do.

(12) Why do not the rabbis and the doctors of Law forbid them from their (habit of) uttering sinful words and eating things forbidden? Evil indeed are their works.

(13) Lawful to you is the pursuit of water-game and its use for food,- for the benefit of yourselves and those who travel; but forbidden is the pursuit of land-game;- as long as ye are in the sacred precincts or in pilgrim garb. And fear Allah, to Whom ye shall be gathered back.

(14) Yea, in their own (eyes) will become manifest what before they concealed. But if they were returned, they would certainly relapse to the things they were forbidden, for they are indeed liars.

(15) Say: "I am forbidden to worship those - others than Allah - whom ye call upon." Say: "I will not follow your wain desires: If I did, I would stray from the path, and be not of the company of those who receive guidance."

(16) Why should ye not eat of (meats) on which Allah's name hath been pronounced, when He hath explained to you in detail what is forbidden to you - except under compulsion of necessity? But many do mislead (men) by their appetites unchecked by knowledge. Thy Lord knoweth best those who transgress.

(17) And they say that such and such cattle and crops are taboo, and none should eat of them except those whom - so they say - We wish; further, there are cattle forbidden to yoke or burden, and cattle on which, (at slaughter), the name of Allah is not pronounced; - inventions against Allah's name: soon will He requite them for their inventions.

(18) They say: "What is in the wombs of such and such cattle is specially reserved (for food) for our men, and forbidden to our women; but if it is still-born, then all have share therein. For their (false) attribution (of superstitions to Allah), He will soon punish them: for He is full of wisdom and knowledge.

(19) (Take) eight (head of cattle) in (four) pairs: of sheep a pair, and of goats a pair; say, hath He forbidden the two males, or the two females, or (the young) which the wombs of the two females enclose? Tell me with knowledge if ye are truthful:

(20) Of camels a pair, and oxen a pair; say, hath He forbidden the two males, or the two females, or (the young) which the wombs of the two females enclose? - Were ye present when Allah ordered you such a thing? But who doth more wrong than one who invents a lie against Allah, to lead astray men without knowledge? For Allah guideth not people who do wrong.