God has given me the honor of selecting forty short hadiths tackling various religious subjects to present to young Muslims so that they can memorize and learn their meanings. I call my collection Al-Arba'ūn al-Wildāniyyah as the hadiths are primarily catered to Muslim children. Every one of these forty hadiths is highly authentic, as they are narrated by one or both of the top two scholars of hadith sciences: Al-Bukhari and Muslim. May God bestow mercy on their souls.