The word(s) "when" appears 1006 time(s) in 918 verse(s) in Quran in Muhammad Pickthal translation.

(801) O ye who believe! Choose not My enemy and your enemy for allies. Do ye give them friendship when they disbelieve in that truth which hath come unto you, driving out the messenger and you because ye believe in Allah, your Lord? If ye have come forth to strive in My way and seeking My good pleasure, (show them not friendship). Do ye show friendship unto them in secret, when I am Best Aware of what ye hide and what ye proclaim? And whosoever doeth it among you, he verily hath strayed from the right way.

(802) There is a goodly pattern for you in Abraham and those with him, when they told their folk: Lo! we are guiltless of you and all that ye worship beside Allah. We have done with you. And there hath arisen between us and you hostility and hate for ever until ye believe in Allah only - save that which Abraham promised his father (when he said): I will ask forgiveness for thee, though I own nothing for thee from Allah - Our Lord! In Thee we put our trust, and unto Thee we turn repentant, and unto Thee is the journeying.

(803) O ye who believe! when believing women come unto you as fugitives, examine them. Allah is Best Aware of their faith. Then, if ye know them for true believers, send them not back unto the disbelievers. They are not lawful for them (the disbelievers), nor are they (the disbelievers) lawful for them. And give them (the disbelievers) that which they have spent (upon them). And it is no sin for you to marry such women when ye have given them their dues. And hold not to the ties of disbelieving women; and ask for (the return of) that which ye have spent; and let them (the disbelievers) ask for that which they have spent. That is the judgment of Allah. He judgeth between you. Allah is Knower, Wise.

(804) And (remember) when Moses said unto his people: O my people! Why persecute ye me, when ye well know that I am Allah's messenger unto you? So when they went astray Allah sent their hearts astray. And Allah guideth not the evil-living folk.

(805) And when Jesus son of Mary said: O Children of Israel! Lo! I am the messenger of Allah unto you, confirming that which was (revealed) before me in the Torah, and bringing good tidings of a messenger who cometh after me, whose name is the Praised One. Yet when he hath come unto them with clear proofs, they say: This is mere magic.

(806) And who doeth greater wrong than he who inventeth a lie against Allah when he is summoned unto Al-Islam? And Allah guideth not wrongdoing folk.

(807) O ye who believe! when the call is heard for the prayer of the day of congregation, haste unto remembrance of Allah and leave your trading. That is better for you if ye did but know.

(808) And when the prayer is ended, then disperse in the land and seek of Allah's bounty, and remember Allah much, that ye may be successful.

(809) But when they spy some merchandise or pastime they break away to it and leave thee standing. Say: That which Allah hath is better than pastime and than merchandise, and Allah is the Best of providers.

(810) when the hypocrites come unto thee (O Muhammad), they say: We bear witness that thou art indeed Allah's messenger. And Allah knoweth that thou art indeed His messenger, and Allah beareth witness that the hypocrites indeed are speaking falsely.