The word(s) "tone" appears 40 time(s) in 36 verse(s) in Quran in Mohsin Khan translation.

(21) The fornicatress and the fornicator, flog each of them with a hundred stripes. Let not pity withhold you in their case, in a punishment prescribed by Allah, if you believe in Allah and the Last Day. And let a party of the believers witness their punishment. (This punishment is for unmarried persons guilty of the above crime, but if married persons commit it (illegal sex), the punishment is to stone them to death, according to Allah's Law).

(22) They said: "If you cease not, O Nuh (Noah) you will surely be among those stoned (to death)."

(23) And We rained down on them a rain (of stones). So evil was the rain of those who were warned.

(24) So We punished each (of them) for his sins; of them were some on whom We sent Hasib (a violent wind with shower of stones) [as on the people of Lut (Lot)], and of them were some who were overtaken by As-Saihah [torment - awful cry. (as Thamud or Shu'aib's people)], and of them were some whom We caused the earth to swallow [as Qarun (Korah)], and of them were some whom We drowned [as the people of Nuh (Noah), or Fir'aun (Pharaoh) and his people]. It was not Allah Who wronged them, but they wronged themselves.

(25) He merges the night into the day (i.e. the decrease in the hours of the night is added to the hours of the day), and He merges the day into the night (i.e. the decrease in the hours of the day is added to the hours of the night). And He has subjected the sun and the moon: each runs its course for a term appointed. Such is Allah, your Lord; His is the kingdom. And those, whom you invoke or call upon instead of Him, own not even a Qitmir (the thin membrane over the date-stone).

(26) They (people) said: "For us, we see an evil omen from you: if you cease not, we will surely stone you, and a painful torment will touch you from us."

(27) "And truly, I seek refuge with my Lord and your Lord, lest you should stone me (or call me a sorcerer or kill me).

(28) Had We willed, We could have shown them to you, and you should have known them by their marks; but surely, you will know them by the tone of their speech! And Allah knows (all) your deeds.

(29) To send down upon them stones of baked clay.

(30) So there covered them that which did cover (i.e. torment with stones).