you have to put your forehead on the paak place.
it means sajda is wajib in all condition
If I am reading Quran or if I am listening audio Quran while I am traveling
If I am reading Quran or if I am listening audio Quran while I am traveling
What would be my responsibility in both situations if Ayat e Sajjada recites
Because I cannot perform sajjada in traveling
You should do the sajda as soon as you are able.