The word(s) "say" appears 931 time(s) in 776 verse(s) in Quran in Mohsin Khan translation.

(641) So unto this (religion of Islam alone and this Qur'an) then invite (people) (O Muhammad صلى الله عليه و سلم), and stand firm [on Islamic Monotheism by performing all that is ordained by Allah (good deeds), and by abstaining from all that is forbidden by Allah (sins and evil deeds)], as you are commanded, and follow not their desires but say: "I believe in whatsoever Allah has sent down of the Book [all the holy Books, - this Qur'an and the Books of the old from the Taurat (Torah), or the Injeel (Gospel) or the Pages of Ibrahim (Abraham)] and I am commanded to do justice among you. Allah is our Lord and your Lord. For us our deeds and for you your deeds. There is no dispute between us and you. Allah will assemble us (all), and to Him is the final return."

(642) That is (the Paradise) whereof Allah gives glad tidings to His slaves who believe (in the Oneness of Allah - Islamic Monotheism) and do righteous good deeds. say (O Muhammad صلى الله عليه و سلم): "No reward do I ask of you for this except to be kind to me for my kinship with you." And whoever earns a good righteous deed, We shall give him an increase of good in respect thereof. Verily, Allah is Oft-Forgiving, Most Ready to appreciate (the deeds of those who are obedient to Him).

(643) Or say they: "He has invented a lie against Allah?" If Allah willed, He could have sealed up your heart (so that you forget all that you know of the Qur'an). And Allah wipes out falsehood, and establishes the truth (Islam) by His Word (this Qur'an). Verily, He knows well what (secrets) are in the breasts (of mankind).

(644) And whomsoever Allah sends astray, for him there is no Wali (protector, helper, guardian) after Him. And you will see the Zalimun (polytheists, wrong-doers, oppressors): when they behold the torment, they will say: "Is there any way of return (to the world)?"

(645) And you will see them brought forward to it (Hell) made humble by disgrace, (and) looking with stealthy glance. And those who believe will say: "Verily, the losers are they who lose themselves and their families on the Day of Resurrection. Verily, the Zalimun [i.e. Al-Kafirun (disbelievers in Allah, in His Oneness and in His Messenger صلى الله عليه و سلم, polytheists, wrong-doers)] will be in a lasting torment. (Tafsir At-Tabari).

(646) And indeed if you ask them, "Who has created the heavens and the earth?" They will surely say: "The All-Mighty, the All-Knower created them."

(647) In order that you may mount on their backs, and then may remember the Favour of your Lord when you mount thereon, and say: "Glory to Him Who has subjected this to us, and we could never have it (by our efforts).

(648) Nay! They say: "We found our fathers following a certain way and religion, and we guide ourselves by their footsteps."

(649) And they say: "Why is not this Qur'an sent down to some great man of the two towns (Makkah and Ta'if)?"

(650) Till, when (such a one) comes to Us, he says [to his Qarin (Satan / devil companion)] "Would that between me and you were the distance of the two easts (or the east and west)" - a worst (type of) companion (indeed)!