rajm

Assalaamu alaikumI am having trouble with missionaries who claim that the Qur'an is not complete. The main concern is the so-called verse of Rajm (stoning). I read that some scholars say it was abrogated from recitation but not in ruling, but the missionaries remind us that the Qur'an says that Allah does not abrogate anything unless a similar or better verse is subsitituted for it. In this case, no verses were substituted, and it's leading me in circles. Are the hadiths which talk about stoning being a verse strong or weak hadiths? For example the missionaries have stated a hadith that mention the actual verse and it would have been reinserted if it were not for fear of the people, and another which states that the leaf it was written on was eaten by a goat. Are these reliable hadiths? Also, when the verses were collected during Abu Bakr's caliphate, were ones that could not be found written down just forgotten from the book? I apologise for the multitude of questions, it is just that i always thought that the Qur'an is a completely preserved book, and i do not like doubts creeping into my heart. Jazakallah