The word(s) "twain" appears 26 time(s) in 24 verse(s) in Quran in Muhammad Pickthal translation.

(11) So they twain journeyed on till, when they came unto the folk of a certain township, they asked its folk for food, but they refused to make them guests. And they found therein a wall upon the point of falling into ruin, and he repaired it. (Moses) said: If thou hadst wished, thou couldst have taken payment for it.

(12) He said: Fear not. Lo! I am with you twain, Hearing and Seeing.

(13) (Pharaoh) said: Who then is the Lord of you twain, O Moses?

(14) Then they twain ate thereof, so that their shame became apparent unto them, and they began to hide by heaping on themselves some of the leaves of the Garden. And Adam disobeyed his Lord, so went astray.

(15) These twain (the believers and the disbelievers) are two opponents who contend concerning their Lord. But as for those who disbelieve, garments of fire will be cut out for them; boiling fluid will be poured down on their heads,

(16) The adulterer and the adulteress, scourge ye each one of them (with) a hundred stripes. And let not pity for the twain withhold you from obedience to Allah, if ye believe in Allah and the Last Day. And let a party of believers witness their punishment.

(17) He said: Nay, verily. So go ye twain with Our tokens. Lo! We shall be with you, Hearing.

(18) He said: We will strengthen thine arm with thy brother, and We will give unto you both power so that they cannot reach you for Our portents. Ye twain, and those who follow you, will be the winners.

(19) When We sent unto them twain, and they denied them both, so We reinforced them with a third, and they said: Lo! we have been sent unto you.

(20) And whoso saith unto his parents: Fie upon you both! Do ye threaten me that I shall be brought forth (again) when generations before me have passed away? And they twain cry unto Allah for help (and say): Woe unto thee! Believe! Lo! the promise of Allah is true. But he saith: This is naught save fables of the men of old: