Reciting Surah Iklaas in every rakaat

Q: I like reciting Surah Ikhlaas, from hadith we know that if one recites Surah Ikhlaas 3 times it equivalent to recitation of one complete Quran. I wanted to know whether surah Ikhlaas could be read:

  1. In every rakath of Fardh salaat.
  2. In every rakath of Sunnath salaat.
  3. In every rakath of any nafil salaat
  4. In every rakath during taraweeh if missed with Jamath.
  5. In every rakath of Salatul Tauba, Salatul Thajjud, Witar and while offering the missed salaat.

Using the Musjid as a thoroughfare

Q: To use the Musjid as a thoroughfare is makrooh. However, some ulama say that if one needs to pass through the musjid to get to the other side, then he should stop in the musjid, make one sajdah, and then pass to the other side, because sajdah is an ibaadat-e-maqsoodah, so if a person does an ibaadat-e-maqsoodah and then goes out the other way it will be jaaiz. Is this correct? Is there any other way out to this masla? Especially in places like the haram shareef and other big musjids, it becomes difficult to walk right around the musjid.

Recording one's Salaah due to frequent doubts

Q: If one has frequently doubts in salaah, that he is recording his salaah with his audio-record function of his phone to check afterwards whether he prayed correctly if some doubt arise about something. Now say he is praying Zuhr and in the last rakaat when he sits after the sajdah, he does not not know whether this was from the 1st sajdah or 2nd sajdah i.e. he cannot totally remember that he did another sajdah before it, but continues on this basis (because he can check with the audio-record anyway) and finishes his prayer. Now afterwards when he checks his audio-record it shows that he did 2 sajdahs thus prayed correctly. Is the salaah valid ?