number 1 is the correct one but when you speak in "fossha" which mean the correct accent with rules and grammers and every thing. and the number 2 is also correct when u speak without rules like native speaker they speak in there own accent. So when see the dhamma tanween (ٌ ) you pronounced it in the middle of sentence like number 1 and you do not pronounced it in the end of sentence and this the rule.