The word(s) "scalish" appears 2 time(s) in 2 verse(s) in Quran in Mohsin Khan translation.

(1) Have you not seen those (Jews and Christians) who claim sanctity for themselves. Nay, but Allah sanctifies whom He wills, and they will not be dealt with injustice even equal to the extent of a scalish thread in the long slit of a date-stone.

(2) Have you not seen those who were told to hold back their hands (from fighting) and perform As-Salat (Iqamat-as-Salat), and give Zakat but when the fighting was ordained for them, behold! a section of them fear men as they fear Allah or even more. They say: "Our Lord! Why have you ordained for us fighting? Would that You had granted us respite for a short period?" Say: "Short is the enjoyment of this world. The Hereafter is (far) better for him who fears Allah, and you shall not be dealt with unjustly even equal to a scalish thread in the long slit of a date-stone.