'A'isha (Allah be pleased with, her) reported that it had been revealed in the Holy Quran that ten clear sucklings make the marriage unlawful, then it was abrogated (and substituted) by five sucklings and Allah's Apostle (ﷺ) died and it was before that time (found) in the Holy Quran (and recited by the Muslims).
Sahih Muslim Book 17, Hadith 30