Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 years ago

If you remember the verse in your mind, it is not called reciting but just thinking or remembering. Sajda is obligatory on reciting or listening to any of the known four verses of Sajda.