The word(s) "that" appears 2553 time(s) in 1926 verse(s) in Quran in Muhammad Pickthal translation.

(41) Evil is that for which they sell their souls: that they should disbelieve in that which Allah hath revealed, grudging that Allah should reveal of His bounty unto whom He will of His slaves. They have incurred anger upon anger. For disbelievers is a shameful doom.

(42) And when it is said unto them: Believe in that which Allah hath revealed, they say: We believe in that which was revealed unto us. And they disbelieve in that which cometh after it, though it is the truth confirming that which they possess. Say (unto them, O Muhammad): Why then slew ye the prophets of Allah aforetime, if ye are (indeed) believers?

(43) And when We made with you a covenant and caused the Mount to tower above you, (saying): Hold fast by that which We have given you, and hear (Our Word), they said: We hear and we rebel. And (worship of) the calf was made to sink into their hearts because of their rejection (of the covenant). Say (unto them): Evil is that which your belief enjoineth on you, if ye are believers.

(44) But they will never long for it, because of that which their own hands have sent before them. Allah is aware of evil-doers.

(45) Say (O Muhammad, to mankind): Who is an enemy to Gabriel! For he it is who hath revealed (this Scripture) to thy heart by Allah's leave, confirming that which was (revealed) before it, and a guidance and glad tidings to believers;

(46) Is it ever so that when they make a covenant a party of them set it aside? The truth is, most of them believe not.

(47) And when there cometh unto them a messenger from Allah, confirming that which they possess, a party of those who have received the Scripture fling the Scripture of Allah behind their backs as if they knew not,

(48) And follow that which the devils falsely related against the kingdom of Solomon. Solomon disbelieved not; but the devils disbelieved, teaching mankind magic and that which was revealed to the two angels in Babel, Harut and Marut. Nor did they (the two angels) teach it to anyone till they had said: We are only a temptation, therefore disbelieve not (in the guidance of Allah). And from these two (angles) people learn that by which they cause division between man and wife; but they injure thereby no-one save by Allah's leave. And they learn that which harmeth them and profiteth them not. And surely they do know that he who trafficketh therein will have no (happy) portion in the Hereafter; and surely evil is the price for which they sell their souls, if they but knew.

(49) Neither those who disbelieve among the people of the Scripture nor the idolaters love that there should be sent down unto you any good thing from your Lord. But Allah chooseth for His mercy whom He will, and Allah is of Infinite Bounty.

(50) Nothing of our revelation (even a single verse) do we abrogate or cause be forgotten, but we bring (in place) one better or the like thereof. Knowest thou not that Allah is Able to do all things?