Question Summary:
1. Benefits of naming a child Ahmad or Muhammad 2. Can children play with animal shaped toys?

Question Detail:

Prophet has categorically mentioned benifits of naming child by name Muhammad and Ahmad.Please let me know the Hadith reference where it is mentioed about adntage of  prefixing name by Muhammad (e.g Muhammad Saleem) and suffixing name by ahmed (e.g Saleem Ahmed)
Can soft toys ( of animal shape) be used in house for playing by child?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
Hereunder is the hadith in reference:
{ مَنْ وُلِدَ لَهُ مَوْلُودٌ فَسَمَّاهُ مُحَمَّدًا كَانَ هُوَ وَمَوْلُودُهُ فِي الْجَنَّةِ }
 رَوَاهُ ابْنُ عَسَاكِرَ عَنْ أُمَامَةَ رَفَعَهُ قَالَ السُّيُوطِيّ : هَذَا أَمْثَلُ حَدِيثٍ وَرَدَ فِي هَذَا الْبَابِ وَإِسْنَادُهُ حَسَنٌ ا هـ ^{[ [i] ]}
Translation: Whoever has a son then names him Muhammad, him and his son will be together in Jannah
There are differences of opinions on the authenticity of this Hadith. However according to Allama Suyooti Rahmatullahi Alaihi, the hadith is authentic.
We have not come across any hadith on prefixing ones name with Muhammad or suffixing it with Ahmad. However, it is permissible to do so. ^][ii]^[
The second part of your question is ambiguous. Kindly clarify what exactly you mean by soft toys and does animal shape include facial features or not?
And Allah Ta’āla Knows Best
Aboobakr Siddeeq bin Mufti Amjad Mohammad
Student Darul Iftaa 
Azaadville, JHB, South Africa
Checked and Approved by,
Mufti Ebrahim Desai.