The word(s) "mayst" appears 23 time(s) in 21 verse(s) in Quran in Muhammad Pickthal translation.

(11) And (it is) a Qur'an that We have divided, that thou mayst recite it unto mankind at intervals, and We have revealed it by (successive) revelation.

(12) Moses said unto him: May I follow thee, to the end that thou mayst teach me right conduct of that which thou hast been taught?

(13) And We make (this Scripture) easy in thy tongue, (O Muhammad) only that thou mayst bear good tidings therewith unto those who ward off (evil), and warn therewith the froward folk.

(14) Therefor (O Muhammad), bear with what they say, and celebrate the praise of thy Lord ere the rising of the sun and ere the going down thereof. And glorify Him some hours of the night and at the two ends of the day, that thou mayst find acceptance.

(15) Upon thy heart, that thou mayst be (one) of the warners,

(16) And thou was not beside the Mount when We did call; but (the knowledge of it is) a mercy from thy Lord that thou mayst warn a folk unto whom no warner came before thee, that haply they may give heed.

(17) Or say they: He hath invented it? Nay, but it is the Truth from thy Lord, that thou mayst warn a folk to whom no warner came before thee, that haply they may walk aright.

(18) O Prophet! Lo! We have made lawful unto thee thy wives unto whom thou hast paid their dowries, and those whom thy right hand possesseth of those whom Allah hath given thee as spoils of war, and the daughters of thine uncle on the father's side and the daughters of thine aunts on the father's side, and the daughters of thine uncle on the mother's side and the daughters of thine aunts on the mother's side who emigrated with thee, and a believing woman if she give herself unto the Prophet and the Prophet desire to ask her in marriage - a privilege for thee only, not for the (rest of) believers - We are Aware of that which We enjoined upon them concerning their wives and those whom their right hands possess - that thou mayst be free from blame, for Allah is ever Forgiving, Merciful.

(19) That thou mayst warn a folk whose fathers were not warned, so they are heedless.

(20) And thus We have inspired in thee a Lecture in Arabic, that thou mayst warn the mother-town and those around it, and mayst warn of a day of assembling whereof there is no doubt. A host will be in the Garden, and a host of them in the Flame.